Jay-Z caught in an early moment of career embarrassment

Remember when Katy Perry was a gospel rock singer? When Jay-Z rocked the Bermuda shorts? When Tori Amos performed with one leg up on the piano? No? Then join MSN.ca in a dubious trip down memory lane as we uncover a few less-than seminal moments that helped shaped some of today's most influential musical minds. We all learn from our mistakes -- but let's see what we can learn from the early career embarrassments of 10 familiar superstars.