I agree. I worked in a jazz record store in lower Manhattan in the late 70's - early 80's, and most Muse releases didn't sell very well, so perhaps Fields was just paying a fair amount. I don't know who else would have released so many David Schnitter or Ricky Ford albums. I thought Muse did a great job in supplying a steady stream of soul jazz and organ jazz albums - music ignored by the New York press but still loved at clubs in Newark and Harlem.
In English, they're SMURFs.
The instrumentation is actually Chick Corea (el-p, p), Joe Farrell (saxes & fl), Eddie Gomez (b), and Steve Gadd (d).
I like the record. It's nothing earth-shattering, but -- like the title implies -- it's a relaxed, enjoyable session.
Giving this another spin:
Association P.C. - Erna Morena (MPS, 1973)
This band was led by drummer Pierre Courbois, but -- for this listener -- Jasper van 't Hof is the hero of this album.
EDIT:
And here's the other sleeve photo by Jochen Mönch that @soulpope mentioned previously: