You have to memorise so much, often including songs and choreography.
And because it's live, it only gets harder when things don't go as planned.
Maybe you forgot a line and had to improvise.
Did you lose your pants off the edge of the stage?
Or perhaps you've even fallen off the stage yourself.
Whatever it was, we want to know! Share your craziest on-stage experiences in the comments below for a chance to be featured in an upcoming Buzzfeed Community post or video!