YOU'VE BEEN OUT ALL NIGHT / DIGGIN' MY GRAVE!
Source: I was an extra yesterday!
She sang at least 3 different songs but you couldn't hear 95% of them since everyone would scream as loud as they could the moment she opened her mouth, and her and Bradley didn't have live mics.
Confirmed song title: "Digging My Grave" (Cooper called it that himself, and it's a duet between Ally and Jackson.)
Ally also has a solo song that acts as an encore for her at a piano at the end of a c