You are in Class 1-A and UA is having a "karaoke" but it really sounded like a singing battle. Your class was up against Class 1-B... while they were singing The Greatest Show, you guys were singing Victorious.

Aizawa: after Class 1-B sang he walks on stage Next up is Class 1-A, with "Victorious" he walks off the stage, he looks like he is tired... as usual

You and the rest of Class 1-A went on stage, you were assigned the high noted because you were the only one who could hold them long enough. The music started which showed that it was time to start.