A man with a guitar is at a microphone while the drummer seems to be resting and the other guitarist has his back to him .
It is impossible that a group of friends are rehearsing for their prom concert .
It is impossible that a group of friends are rehearsing for their prom concert .
Chances are about even that a group of friends are rehearsing for their prom concert .
A group of friends are rehearsing for their prom concert .