SilverWook said:
http://www.thestarwarstrilogy.com/starwars/post/2013/02/07/Star-Wars-and-other-Galactic-Funk
http://www.depthoffieldmagazine.com/2012/07/29/starwarsploitation-sounds-star-wars-on-record-1977-1979/
Great links, thanks!
Here is a list of artists who have released recordings of music from the original Star Wars films. Some have been mentioned already. It's not a complete list by any means and not all disco but I hope it's useful:
John Williams / The London Symphony Orchestra / Jabba's Palace Band
Meco
The Electric Moog Orchestra
John Rose
The Sonic All-Stars
The Planet Robots
Ciato & Ciato's
Galaxy 42
Neil Norman
The Force
Patrick Gleeson
Bang Bang Robot
Graffiti Orchestra
David Matthews
Maynard Ferguson
Richard Groove Holmes
Don Ellis And Survival
P.K. And The Komets
Rocky Cavallo Orchestra
Cook County
Orquesta Magic Fantasy
Marty Gold & His Orchestra
The Now Sound Orchestra
Wonderland Space Shuttle / Wonderland Singers & Orchestra
Kid Stuff Repertory Company
Space Pilots
Soft Energy
Byron Lee and The Dragonaires
Ferrante & Teicher
The Ventures
Los Valentinos
The Galactic Force Band
Gaz
Geoff Love & His Orchestra / Geoff Love's Big Disco Sound
Zubin Mehta Conducts Los Angeles Philharmonic Orchestra
The Several Impression Orchestra
Happy Piano
Ronnie Aldrich His Two Pianos And Orchestra
Osamu Shoji
The Rainbow Dance Orchestra
Jonas Nordwall
Boris Midney
Ron Carter
Sideral Group
Barry Marshall And His Orchestra
Michael Stevens Et Son Orchestre
The Sound Of Excitement Marching Band
Urth
M.B.4.
This mixtape features some of the above artists and is great fun:
http://headnodic.blogspot.co.uk/2012/01/funky-star-wars.html