I dreamed last night that I was hearing a piece of music played at a party, and that it was amazing. When I woke up, I remembered it in perfect detail.

This has happened to me before, only a few times in my life, and as I have had musical training I was able to create the piece I heard in my dream. It's a handy way to be able to write songs, but is this cheating?

Does anyone else hear music in their dreams?