Zappa has come up recently in online discussions of . . er . . . advanced robotics. Actually, I always liked Zappa’s instrumental stuff best, and some of his guitar solos maybe best of all.
This is from a 1988 concert, a soaring, plaintive Zappa guitar showcase. The tune is from the end of Joe’s Garage. The time signiature is either 9/4 or alternating 4/4 and 5/4. I think it’s that extra ninth beat that gives it the strong lilting feeling every time round before the down beat.