This one blurs the lines of rock / jazz / psych / folk / prog, etc.  Initially released on the acclaimed Vertigo label in the UK in 1970, Affinity were a one and done band offering gorgeous female vocals from Linda Hoyle and a rip roaring jazz rock backing band.  The people on this site always praised the jazzy psych folk tunes "Mr. Joy," and "Coconut Groove" but tunes like "Three Sisters" and "I Am and So Are You" this band could rip shit up.  For those with lighter pockets, there is a US pressing on Paramount that will hold you over.