purchase [Whatever Turns You On ]
When SMM checked into the Trio theme back in 2010, Darius wrote up Strange Brew by Cream. After the Cream trio broke up, Clapton and Baker moved on to Blind Faith, which included Steve Winwood.
Jack Bruce teamed up with two members of Mountain to form a band called West, Bruce & Laing. West, previously from Mountain, [Nantucket Sleighride] apparently earned the <Mountain> moniker on account of his rather large size.
Ostensibly one of the famed late 60s super groups, WBL produced a trio of albums between '72 and '74 before folding; a trio of albums in a trio of years. As a super-group, they signed the largest contract of the time - a $1 million deal with CBS for the three albums. As with much of Mountain's repertoire as well as a fair amount of Cream's, the music a pretty heavy. And it wasn't just their music that was heavy.
Their first album, Why Dontcha did reasonably well, but by all accounts their heavy use got in the way of potentially better quality work. The posted song is from the second of their studio albums but as far as I can tell it is from the much later reincarnation of the band with Jack Bruce's son.