Here's a part of my today's journal:

"In one of the other dreams I was in my room and I was going to play the guitar. I pretty much suck and am unable to play a lot of different types of music. When I played the first chord it sounded like a song I knew so I started playing that. The sound quality was amazing and I was playing awesome! The song I played was both Nirvana - There's Something in the Way and Heart - Barracuda, which is only possible in the dream world. After a while I realized that even if I hit the chords wrongly or not music would still play, I checked the cable and it saw it was disconnected. So, while music went on, I reconnected the cable so I could continue playing even though I wasn't sure if I wanted to. It was then that I was awoken."

I had to have breakfast immediately and was extremely confused as I had been half awake and half asleep experiencing the weirdest dreams, such as this one, for half an hour or so.

Mostly music is an amazing experience in my dreams. Not only do I hear the music, I also feel and see it. Many times the world around me actually transforms accordingly. If I have time to search my dream journal properly I'll get back to you with more examples.

I'm afraid I'll have to disappoint you on composing and reading music though. I can't do the last thing, never did the first thing and as I previously said, it's a completely different experience!