First it appeared as a sample on a record called Mind of A Maniac by D'Cruze in the late 1990s – apocalyptical, dub-ish trip-hop played to death round here as the big year approached.
Then it occurred on Kruder & Dorfmeister's DJ Kicks album, weaved into a track called Livin' Free by Small World, a copy of which may now be somewhere in the kitchen.
Thereafter I encountered it on A Monstrous Psychedelic Bubble Exploding In Your Mind Volume 1: Cosmic Space Music. This was a relaxingly experimental compilation put together by The Future Sound of London. But my version has no track listing and so it remained mysteriously anonymous.
It being an instrumental, Google had no purchase. ('Psykedelic spacey sax solo 70s heavy bass vibe'). Finally we have it in sight. It is Grover Washington Jr's cover of The Temptations' track Masterpiece from Soul Box Vol 1.
We have added it to the desert island playlist. To be honest, we could probably live there on the sand with this alone.