Back when I was an active musician, songs used to come to me in dreams all the time. I used to keep a guitar and a tape recorder next to my bed for just such occasions.
Some of my best tunes came to me that way.
I’m in a creative field myself, no musician although I’ve always wanted to be, but my talents and abilities lie elswhere. Funny how the human mind works, I’ve experienced it myself, seemingly perfect things arriving in a dream. I’ve speculated that there’s some sort of subroutine, for the lack of a better word, running in the background of our brains, for creative types at least.