I play guitar but what i experience while playing high is very similar to what you get. I'm in a jam band and its almost completely on my shoulders to keep our sound fresh. One time I decided to toke before a session and we jammed for a whole hour straight(felt like a week) and my drummer and bassist told me i came up with some of the most awesome creative shit they ever heard out of me.. which is funny because my mind was wandering the whole time and I forgot everything i even played!