When Paula Abdul was a judge on American Idol, lots of contestants sand her songs. Sure, it was probably an attempt to ingratiate themselves with her and to get a yes vote, but Paula never said to anyone to not sing her songs. Jennifer Lopez on the other hand does not want Idol contestants to sing her songs. "It was cute, super entertaining and flattering, but no." I think it has less to do with people singing her songs, and more to do with the fact that there will probably be lots of singers who sing them way better than she ever has. Who cares if people sing her songs. Steven Tyler has not come out and said for contestants to not sing Aerosmith songs. Of course has done so many drugs he might not actually remember they are his songs.