"Half Moon" by Big Brother And The Holding Company

Janus Joplin w/Big Brother & The Holding Company did the album "Pearl" - each did a solo track. Janus did "Mercedes Benz" and BB&THC did "Half Moon," a really cool instrumental tune. I have not been able to find it anywhere.

I had this album years ago - loaned, never returned : (
It was one of my favorites.