Ralph Towner & Gary Peacock - Witchi Tai To

Ralph has recorded this song a number of times through the years. Fx with Jan Garbarek in 1973, and with Oregon (where he played piano) in 1978. Here he gets downright funky. 1997.
The song originally came from the saxplayer Jim Pepper's native american grandfather. There's a wonderful clip of him singing it here on yt, check it out