Melodiya Orchestra - Labyrinth 1974

Release info:
Ансамбль Мелодия - Лабиринт
Melodiya Orchestra - Labyrinth
Melodiya 1974 LP С60-05277-8
The most recognizable release of the Melodiya ensemble among collectors: it's raw, jazz-only, features overdriven sax and all written by the band's members themselves. There is a well-known opening break in B2 also.
P.S. I am shocked - the release is missing from Discogs! Added it.