Yes, I Do Hear Music In My DreamsI DO hear music in my dreams that does not actually exist. Or, on occasion, exist as of yet.
First scenario occurrence: I was about 5 years old and heard techno and trance music when I was dreaming. The club that I was in was really lit by pink neon lighting. I didn't even know what that kind of music was. NO it was NOT DISCO! It was trance-y. When I first heard trance, techno, I KNEW the dream came true!
I had another dream where I heard music, but the song sounded so "plausible". I don't know what they were saying in the song, but it was a plausible radio song. I really liked the song a LOT. I listened to internet radio on Shoutcast to see if I could really get to hear one like it. No dice. I was a little sad for this as I may not hear that song again. Hope someone makes the song, though. I thought the song was cool.