Although pretty obscure at international level, the Jazz-Rock trio Barcelona Traction from, obviously, Barcelona Spain, enjoyed a very respectable reputation in the catalan scene of the 70's, partly thanks to their performance at the (for Spanish 70's standards) mythical 1975 Canet Rock Festival, "the catalan mini-Woodstock"

 

 

I have their self-titled debut album from 1975, straightforward jazz rock not too orginal nor complicated but good compositions and excellent skillful performance, pianist Lucky Guri actually went on to become considered as possibly the best jazz pianist in Barcelona, here you have 2 more tracks

 

 

 

They reformed and released a 2nd album in 1982 called Nano which I do not have but I have read that it took distance from the prog-fusion of the debut and focussed more on pure jazz.

 

I can take care of the bio and discography.