Conexion's Harmony, Spain 1973

 

From Discogs, as usual:

Conexion was a kind of Spanish version of Blood, Sweat & Tears and Chicago, i.e. up-beat, song-oriented jazz-rock with brass and guitars. Their first album had a side-long track of greater interest, an ambitious instrumental named "Concierto Uno".

It's also similar, particularly in the harsh baritone vocalizing, to the early 70s Dr. Music I posted here before.  Our Music gives you an idea:

Of course, given the above, pay attention to the sidelong concerto, it's quite good though perhaps not 'quite good' in the sense of Valentyne Suite or the Grand Canyon (Suite) by Patrick Moraz, or from this blog, the much rarer but masterpieceial Garuda Suite.

It's too bad they didn't put out more music like this.