Ok, so this is how the song lyrics work

Orange: is Sunset singing

Blue: is Rainbow singing

Purple: is the two singing together.

After stopping by an ATM and using Dumbbell’s credit cards to get some quick cash, Sunset smiled to herself, saying, “Good. Now that I have a little bit of cash on me, I can use it to get the tickets, and then, Trixie, you're gonna know what it feels like to lose everything. Just like I did.” Standing at a crosswalk to enter the nearby park.

Looking down at her phone as cars passed her by, Sunset saw it was four o’clock. Pressing the button on the crosswalk she waited for a short time before being able to cross safely. Knowing that school ended at three-thirty, she muttered as she entered the park, “Misty should be here in the next few minutes. She better not stand me up!”

Choosing to sit on the bench where she had her talks with Luna and Applejack, Sunset found she didn’t need to wait long. She soon saw two people approaching her. One was a teen girl holding a metal box in one hand and a white cane in the other. She was being led over to Sunset by an older woman who had a roll of tickets slung over her left shoulder, tied by a thick rope.

Seeing Sunset's face, the older woman said, “What happened to your face?”

“None of your business!” Sunset snapped. “Which one of you is Misty Shores?”

“I am Misty Shores,” the teenage girl replied. Misty waved her cane around a few times till she found the bench that Sunset was sitting on. Sunset watched as Misty felt around to make sure the seat was clear before taking a seat. “I take it you are Crystal Strikes.”

“Wha--Oh! Uh, yes I am. I have the money for the ticket.” Looking at the older woman as she sat to Misty’s left, Sunset continued coldly, “And who the hell are you? I don’t recognize you from school, and I wasn't told we'd be having company.”

“I am Candy Lime-Heart. I didn’t attend CHS, but Vice Principal Luna let me help out with this, as I am also Misty’s in-house living staff. I'm here to make sure she doesn’t get taken advantage of while she is selling the tickets.”

"And you're in luck," Misty said with a soft smile forming on her face, "Normally, I wouldn't be here selling any tickets the day of the dance, but since you called early enough, I decided to make an exception."

“Oh, Okay, thank you," Sunset said disinterestedly. She took out twenty-five dollars and said, "Here's the money.”

Sunset watched as Candy took the two bills, folded the five-dollar bill lengthwise, and double-folded the twenty-dollar bill. As she watched her ill-gotten money going into Misty's money box, she couldn't help but feel a bit greedy. Her hands folded into fists briefly, and just as she was about to take back her money and steal a ticket, she stopped herself, thinking, “Don't do it! You need to keep things on the down-low. You can’t afford to draw that much attention to yourself.”

Her attention returned to the present as Candy placed the roll of tickets into Misty's lap, saying gently as she took the money box from Misty, “Roll once towards you, then stop. Run your fingers down two panels and tear.”

Doing as she was instructed, Misty soon handed out the ticket to Sunset, who took it, saying, “Thanks.” Looking at the paper ticket in her hand, Sunset noticed she had two tickets instead of one. “Wait, you gave me two tickets instead of one.”

“Oh,” Candy began as Misty held out her hand for Sunset to return the extra ticket, “That's not an admission ticket. It's so you can get food and drinks at the dance without having to use actual money for it.”

“Oh,” Sunset replied. Thinking it was best to shake hands and leave as quickly as she could, she continued, “Well, uh, thank you both very much. I gotta go.”

Getting up to leave as she took a few steps from the bench, Sunset suddenly froze when she heard Misty say, “You are very welcome…Sunset Shimmer.”

Looking between Sunset and Misty, Candy said, “I think you're mistaken, dear. Sunset Shimmer passed away a little more than--”

Candy’s words were cut off when Sunset said, “How did you know?”

“Through your voice. You never disguised your voice during our conversation, so it was easy to tell that you weren't Crystal Strikes. Likewise, I've heard your voice many times during our time at CHS, so it wasn't hard to tell who you were. But, you also sound...different. Harsh and sad, not confident like you used to sound."

"Were you living under a rock for the week before Christmas? Haven't you heard of Anon-a-Miss?" Sunset asked, equal parts surprised and irritated.

"No Sunset, I had the flu and was out of school all that week and still bedridden the next. When school started back, I heard mutterings about Anon-a-Miss, but I didn't pay much attention to them; it's not like I can use MyStable anyway. I also heard some terrible things about you and some...unfortunate rumors about you that, thankfully, turned out to be just rumors.” As Sunset was busy processing what she was told, Misty continued, “I don’t mean to be rude, Sunset, but may I please feel your face so I can see you.”

Candy began, “Misty, we should--”

“Please stay out of this, Candy," Misty said, an edge to her voice. “You don't need to worry; I doubt Sunset will hurt me with you here.” Again, while still holding her hand out, Misty said, “Please, Sunset, may I?”

Feeling a bit comforted that there was at least one person at school who didn't hate her guts because of the Anon-a-Miss incident, even if that person was out sick, Sunset said, “Well, we never did officially meet, either during my bullying days or while I was trying to redeem myself, so yeah, why not? But you won't like what you will see.”

“We'll see about that,” Misty said, a slight grin forming on the girl's face.

Misty's fingers went to work, tracing every angle of Sunset's face. They felt along her cheekbones and outlined her face from hairline to chin. They felt the ridges of Sunset's eye sockets and traced the shape of her eyes, nose, and lips. Finally, they felt along Sunset's scars and the wrinkles and creases decorating Sunset's forehead and the corners of her mouth. After what felt like twenty minutes, Misty finally retracted her hands and frowned.

"Told you you wouldn't like it," Sunset said.

"It's not that," Misty said. "You just seem so sad and stressed, like you have a heavy burden weighing on you."

"Yeah, well, I've got a lot on my plate," Sunset said, getting up. "Now, if you don't mind, I should be going."

“Sunset, if I may be so bold, I don't think you should go to the dance. The things I heard about you that week were horrible, and people still seem to detest you even after all this time. I have a very bad feeling that if you go back to CHS, you're only going to get hurt.”

"The only one that's going to get hurt is Anon-a-Miss," Sunset said, walking away from Misty and ignoring her calls. "Once I find her, she'll have the flames Tartarus to pay for what she did to me."

Leaving the park a few moments later, Sunset caught a bus back into the city. Spotting a clothing store, she pulled the stop cord. An hour and a half later, she came out of the store, carrying two bags filled with shoes, earrings, a cheap necklace, a dress, and a purse for the dance.

Checking a clock that hung at the bus stop, she smiled to herself, saying, “Good. I have just enough time to get showered and dressed before I head out to the dance. I need to look my best. After all, I've got a date with Trixie.”

Soon enough, she found herself back at Summer’s and Gilda’s apartment. Looking around and not seeing anyone, she headed into the bathroom. Taking her clothes off and turning the water on, Sunset was about to get in when the bathroom door suddenly opened, and in walked Sonata, who froze in her tracks when she saw Sunset standing naked in the bathroom. Quickly grabbing a towel and covering herself up, Sunset yelped out, “Sonata! What are you doing here! I thought no one was home.”

Grinning ditzily and blushing, Sonata said, “We weren't. We were all down in the community room." She took a moment to look Sunset up and down before ending with, "Nice."

“Get out!” Sunset said, now blushing herself. "And next time, knock before you enter the bathroom.”

Seeing the gown and shoes sitting nearby, Sonata quickly said, “Ooh, looks like you're going somewhere fancy. Can I do your makeup? You know, to help hide your, uh, scars?”

Wanting to get rid of Sonata as quickly as possible, Sunset said, “Yeah, whatever, just leave so I can shower in privacy.”

“Sure, sure.” Sonata stood for a few more moments before blurting, “You sure I couldn’t--”

“Out!” Sunset pointed to the door with a bitter frown.

Giving Sunset a playful pout, Sonata skipped out of the bathroom, flashing Sunset a silly grin. Seeing Summer reading in the living room and Gilda lying on Summer's lap, Sonata headed over to a recliner and sat down, letting out a contented sigh.

“What's up, Blue?” Gilda asked, sitting up.

“Just saw Sunset naked,” Sonata replied with a light, playful giggle, lightly kicking her feet back and forth.

"Nice," Gilda said, grinning and shooting a sideways glance at Summer, who just rolled her eyes.

"That's what I said!" Sonata grinned widely. “And even better, she's letting me do her makeup when she gets out of the shower." Her gaze growing dreamy, Sonata continued, "I'm definitely gonna have to give her some blush. She's really cute when she blushes." And just as quickly, she grew excited again and squealed as she ran to her room, "This is gonna be so much fun!"

Gilda watched her go, a very worried look on her face. "You, uh, don't think she--"

“Yeah, I do. I think we need to have a talk with her.”

Sunset came out of the shower and into the living room a few moments later, fully dressed. Looking to a pile of her old clothing Sunset dug through it quickly finding her key chain. Placing it into her purse she looked at Gilda saying, “Where's Sonata?”

"Here I am!" Sonata yelled, gently pushing Sunset over to a recliner and sitting her down. Twenty minutes passed as Sonata meticulously added makeup to Sunset's face, paying special attention to the scars. Finally, she leaned back and said, “There, all done. Let me get you a mirror.”

Leaving and returning to the living room a few seconds later, Sonata gave Sunset a small mirror. Sunset scrutinized Sonata's work, eventually saying, “Wow, I'm impressed, Sonata. This actually does look really good. Thanks.”

“Thanks, Sunset!” Sonata replied giddily. Content, Sunset got up and headed for the door, stopping when Sonata tapped her on the shoulder. When Sunset turned around to look questioningly at Sonata, the grinning siren leaned forward, quickly pecking Sunset on the lips and saying, “Have fun wherever you're going. I’ll be right here when you get back.”

Before anyone could react, Sonata skipped off to her bedroom, giggling happily. When she was gone, Sunset said to the two remaining girls, “Why did she do that?”

Summer replied, "Well, Sunset, I guess she...likes you."

"Oh, great," Sunset said, rubbing the bridge of her nose.

"Yeah, great," Gilda said sarcastically. "Look, Sunset, we're gonna talk to her about this, but just so you know, if you hurt her," Gilda cracked her knuckles, finishing, "we're gonna kick your ass."

Sunset simply rolled her eyes. "Oh, good, two more people who wanna go after me. Get in line, girls. Now, if you don't mind, I have an Anon-a-Miss to deal with."

When Sunset left, Summer and Gilda looked confusedly at each other. Finally, Summer asked, "An anonymous what?"

Gilda thought for a while before it hit her. "Oh! I read something online a few weeks ago about that. This girl at CHS started some account called Anon-a-Miss to spread rumors and stuff. I guess she did something really bad to Sunset."

"And, given Sunset's...condition, this is likely to end very badly unless we stop her," Summer said. "Let's go after her. She's probably on her way to CHS, so she shouldn't be hard to find."

"Sounds like a plan," Gilda said. Before leaving, she yelled down the hall, "Sonata, we're heading out. Don't wait up."

"Where are you going?" Sonata yelled back.

"Don't worry about it. We'll tell you when we get back. Be back soon." With that, Gilda and Summer left to follow Sunset, hoping the girl didn't have too big a head start.

“Okay, I guess. Have fun," Sonata called. When she didn't get a reply, she shrugged and went back to doodling a certain fiery-haired teenager before getting ready for bed.

Sunset finally got to the school, and after giving her ticket to a very surprised and scared Derpy Hooves, she entered the dance room and began her search for Trixie, getting looks similar to the one Derpy wore from everyone nearby.

Rainbow was just coming out of the back of the dance room, carrying an extra punch bowl. When she spotted the familiar hair from across the crowd of people, she stopped in her tracks, dropping the glass bowl as she said, “Jesus Christ, is it really her?”

“Rainbow Dash, watch your language!” Vice Principal Luna scolded. Seeing Rainbow wasn’t paying attention to her, Luna looked in the direction Rainbow was looking in, her expression immediately changing to surprise. “Good Lord!” Heading away from Rainbow, Luna said to herself, “I have to find Twilight and Celestia. They are not going to believe this.”

Hearing the punch bowl break, Applejack came over to Rainbow, saying, “Ya saw her, didn't ya, Rainbow. Ah did, too. Ah'm in as much shock as you are.”

“I don’t understand. I saw her die in my arms!” Rainbow exclaimed. “How can she still be alive?”

“Who cares how or why? All that really matters is that we have another chance to do what's right and try to salvage the friendship we ruined. And Ah think you should go first; y'all have been beatin' yerself up mighty hard for the past month or so. Y'all still have feelings fer her?” At Rainbow's wordless nod, Applejack continued, “Then go on. Make this second chance really count.”

Hugging herself as a tear trickled down her cheek, Rainbow said softly, “But what if she hates me for all I said to her?”

Gently laying her hands on Rainbow's shoulders, Applejack said, “Listen, Rainbow. Ah'm sure she'll be angry, and Ah'm sure she'll say a lot of things you don't wanna hear, but ya have ta let her say what she needs ta say. The most important thing, though, is that ya don’t walk away from her this time. Tell her how ya truly, deeply feel in yer heart, Rainbow. If she still loves ya, she’ll tell ya, but if not, at least you can have some closure and some peace.”

Sniffing with a slight grin on her face, Rainbow replied, “A-Alright, I'll do it. And I’ll let her yell at me and call me whatever she wants, but I'm gonna do whatever it takes to prove to her how sorry I am for all that I did to her.”

“That’s the spirit. Now, Ah'm gonna give ya some space and meet some of the new students. And Rainbow?”

“Yeah?”

“No matter what, ya have ta let her pour her own feelings out, even if ya don’t wanna hear 'em.”

“I will.”

Rainbow found Sunset talking with a group of freshmen students. Without thinking, she opened her mouth and began to sing.

“My God! I can feel my heart beating faster

As I approach her.

And my mind is racing

With the thoughts of what I did to her

So many weeks ago.

Can it really be her

Standing right in front of me?

Could it be that you’ve come back to life?”

Sunset moved away from the group, taking notice that, with each step she took, Rainbow kept following her. Trying to avoid her, Sunset tried another group, keeping her eyes on Rainbow.

“I know your eyes as I follow you.

Dark and familiar, their sheen

Deep and green as the sea.

I know that face,

Strange, though, it seems right now.

So many weeks ago I saw you

In your coffin, you were so beautiful.

I wanted to join you in death's embrace.

The day I broke your heart

Still, haunts my dreams.”

Sunset, needing some fresh air, stepped outside into the evening, Rainbow tailing right behind her. Growing bitter at Rainbow's pursuit, Sunset swallowed hard and replied,

"This girl is dead.

She is no more.

So go away and play your game

With someone else.

The girl you once knew died alone,

Broken and cold, a little each day,

While you stood by and pushed her to her grave."

Sunset turned back around at glared at Rainbow, who looked down as her own doubts began to gnaw at her. Sunset saw only pain and remorse in Rainbow's eyes.

“Your mind is clearly playing tricks on you.

You must have had too much to drink.

Go back inside and get away from me.

The girl you seek is long gone.

Broken and cold, she died alone.”

Seeing the rest of her former friends coming into the dance room followed by Luna and Celestia, Sunset smirked lightly to herself, catching Rainbow's attention as she pointed into the dance room.

“She was put in her grave

And now rots alone

In the cold, hard ground,

Placed there by those she foolishly trusted,

By those, she once called friends,

By those who once called her family,

By one she stupidly loved,

By those same friends who then…”

Sunset pushed past Rainbow, bumping her shoulder into Rainbow's and nearly knocking the athlete over as she reentered the dance room.

“...moved on.”

Following her back inside, Rainbow watched as Sunset offered her hand to a new freshman girl, and the two began to dance. Quickly looking around, Rainbow didn’t think twice before grabbing Derpy and, with lightning speed, pulling the young girl off her feet and dragging her to the dance floor.

"I am a ghost.

Just a mirage foolishly chasing traces of her.

Nothing more.

So why does it hurt so much?

Why do I hesitate to hold her again

When a simple whisper from her will do?"

"There in that voice,

I heard a trace of you.

Though your voice is changed,

I still know it to be you.

So why do I hesitate

When a simple, whisper from you would do?

Dark and familiar, her eyes

Are as green and deep as the sea.

I know she's somewhere inside that shell.

How can she dance so close and yet so far away?"

Rainbow and Sunset both spun, each reaching for what she thought were her partner's hands, only to pause for a moment as she clasped the other's hand.

“This girl is dead.

She is no more.

Her coffin sits in a cold, dead grave

And though it tortures me, why do I feel

Like I should hold you again,

You who broke my heart

And stole my life away?

How can you stand so close

And yet be so far away?”

Those eyes are killing me.

They torture me.

Why did I break your heart?

Why did I steal your life away?

How can you stand there,

A mere few feet from me,

And yet be so far away.

In eyes once familiar to me,

A stranger I see.

How can I ever be forgiven

For the wrong, I have done?

In a face once loved by me,

Pain and anger I see.

And to think, you fell into darkness 'cause of me.

It tortures me to think of what I did to you.

And that's why I hesitate to hold you again.

Sunset spun Rainbow in a half circle, pulled her in close, and held her in her arms for a few seconds, letting her memories flood inside her mind. Rainbow reached up, gently caressing the side of Sunset's face.

“Can either of us really ever be free?

How can you hold me and yet still be so far away from me?

Can I ever be set free of my pain and guilt

Or will the need to have vengeance win out.

A simple whisper should do,

But would it really save her

Or condemn her to be like me?”

"With so much broken within me."

"With so much taken from me."

“We once laughed together.

We once danced together.”

“I loved you but now…”

Spinning her around and looking into her pink eyes, Sunset laid two fingers on Rainbow's lips.

“There are no more words left to say.”

Stepping back, Rainbow felt Sunset take her hand into her own, placing something cold and metal into it. Looking down, Rainbow's eyes widened as she held the same keychain she had buried with Sunset six and a half weeks earlier.

Backing away and letting an oncoming crowd of students swallow her up, Sunset said as Rainbow caught one last sight of her, “May you be happy with the life that you have chosen, Rainbow.”

Rainbow watched the last traces of Sunset disappear behind the large crowd of students as they all began to dance on the floor. Panicking, Rainbow began to push forward, trying to get past on coming crowd of students.

“Hey, watch where you're going!” one student yelled, knocking Rainbow to the floor.

Without thinking, Rainbow quickly got back to her feet and landed a quick right hook into the student's jaw, knocking him down.

“Don’t mess with me, kid,” Rainbow yelled back to the shocked teenager.

Before Luna, Celestia, Twilight or any of their five friends could intervene, Rainbow saw a door leading outside slowly begin to close. She rushed through it and headed down the street, saying, “She has to be out here somewhere. Where else could she have gone?”

A taxi pulled up to CHS, and Gilda and Summer got out. Summer looked at the school, saying, “This is as far you go, Gilda. I don’t want to risk your life here.”

“Now wait a minute, Summer,” Gilda began. “I really do appreciate the sentiment, but I want to help.”

“And you can help best by staying out here. If Twilight shows up, you can tell her that Fourteen is alive and is on her way here. If Twilight doesn’t show up and you happen to find Fourteen, try as hard as you can to keep her calm. I'm going to head inside and see if she's already been here.”

“What if Sunset won’t listen to me?”

“Then let her go. I'll deal with her.”

“And you're sure you can beat her by yourself?” Gilda asked.

“Well...no, but--”

"No!? What about the night at the graveyard? You did well enough then!" Gilda exclaimed.

"Yeah, but she wasn't herself then. Her body and mind weren't working together. Now, when her body and mind are connected, she'll be much tougher. Even then, I have to at least try to help her. I owe her…everything."

As Summer went inside without another word, Gilda took a spot near the front steps, slumping down with her knees pulled into her chest.

As Luna and Celestia questioned the fallen teenager, Sunset began to make her way into the library, soon finding Trixie talking with two other students. Quickly choosing a nearby bookshelf to hide behind, Sunset waited for Trixie to pass her by, far enough not to be easily spotted but close enough to hear what she was saying.

"Well, of course, Trixie has always known whom Anon-a-Miss was," the braggart began as she placed a folded-up school newspaper into her backpack. "It was easy for her to connect the dots, after all. I mean, really, the profile and page just happen to share so much in common with her? Obvious, much."

"That bitch! She lied to me!" Sunset thought, teeth elongating.

The three girls walked by Sunset, not taking notice of her while Trixie shared her dangerous tail with her classmates. "I didn't say anything, though, since Anon-a-Miss was doing a great job getting rid of that bitch Sunset Shimmer, and really, why should Trixie get in the way of that?"

Unable to contain herself any longer, Sunsets eyes instantly went black. Turning around, she punched the bookshelf, causing it fall over and giving away her hiding place.

The three girls immediately turned around at the sound of the crash. When they saw Sunset glaring at them with her darkened eyes, Trixie gulped, saying, “S-Sunset? Is that really you? I thought you were--”

Quivering with rage, Sunset rushed over and grabbed Trixie by the shirt, lifting her up into the air.

“Hey, let her go!” one of Trixie’s friends yelled.

Instantly, Sunset's skin took on a reddish hue, and her hair started glowing and heating up. Sunset back-fisted the girl, sending her flying into a bookshelf. The shelf fell over on top of the girl, causing her to let out a blood-curdling scream. The other girl turned to run, only to be grabbed by Sunset's free hand and dragged out of the library, begging for mercy.

Sunset dragged them to a balcony overlooking the dance room. Sunset dropped Trixie to the balcony floor, causing her to yelp in pain. Quickly kicking Trixie in the stomach, Sunset smiled, seeing all the fight was taken out of the upstart girl. Holding the other girl, who trembled in fear, near the ledge of the balcony, Sunset said to her, “I need a diversion to get out of here without anyone getting in my way. I guess you’ll have to do. Oh, and by the way,” Sunset leaned in close to the crying girl, finishing, "you need to find better friends; snarky bitches like Trixie will just be the death of you."

Before the girl could scream for help, Sunset threw her head over heels over the balcony, causing her to land on the food table below, smashing it under her. Her nearly lifeless body lay on the broken glass and wood of the table, eyes wide open. Students all over the room ran in terror. Picking Trixie up and slinging her over her shoulder, Sunset said, “Once I get you someplace safe, you and I are going to talk about Anon-a-Miss.”

Seeing all the students fleeing the scene, Summer pushed her way into the dance room. Looking up, she saw Sunset carrying Trixie like a sack of potatoes over her shoulder. Sunset laughed coldly as she ran down the hallway, jumping out a nearby window. Getting back outside, Summer looked around, soon finding Gilda. Summer ran to her, saying, “We failed. She's gone and has a hostage, and there's no way I can track her. There's nothing we can do now but hope that girl makes it through the night.”