Resume: My Past is Not Today is a alternate song featured in the My Little Pony: Equestria Girls. The alternate song marks Sunset Shimmer's first naked solo.

At dusk, Sunset Shimmer is seen singing on the roof of Canterlot High, still completely barefooted and naked only with the school's jacket on to cover her naked body after her acid rain today in the morning.

Power
Was all I desired (I desired, all I desired)
But all that grew inside me
Was the darkness I acquired

Then, a flashback of her demonic transformation occurs.

When I began to fall
And I lost the path ahead
That's when your friendship found me
And it lifted me instead

Like a phoenix burning bright
In the sky
I'll show there's another side to me
You can't deny

I may not know what the future holds
But hear me when I say
That my past does not define me
'Cause my past is not today

Through further flashbacks, Sunset discards the photos of her as Princess of the Fall Formal as seen in Principal Celestia's office.

Ambition
Is what I believed
Would be the only way
To set me free

She sings about how difficult it was for her to make friends.

But when it disappeared
And I found myself alone
That's when you came and got me
And it felt like I was home

Like a phoenix burning bright
In the sky

Sunset decides to let her past go by staying herself completely naked and letting the school's jacket blow away in the wind.

I'll show there's another side to me
You can't deny

She is soon surrounded by a yellow magical aura.

I may not know what the future holds
But hear me when I say
That my past does not define me
'Cause my past is not today

As she starts to float, she takes on a naked phoenix-like form.