Is it normal this happened to me so randomly

Ok this may sound weird, but my friend recently got me into playing guitar, and he even went far as to teach me how to play. After a session, I was tired and went to sleep... and in my dream I was at a church piano next to a pretty girl and a closed song book. She opens the book and there, on that paper, were guitar tabs. When I woke up I remembered most of it and wrote it down. He came over the next day and he played my dream music. It sounded amazing and he said he would make music from it. is it normal to dream some sick music like that?