This is one my old favorites, and is actually not library music believe it or not, but it's on the same level of quality and class. It's called "Electro Phantasma" from the soundtrack to the 1979 film The Electric Horseman and it's composed and arranged by Dave Grusin.
Funny enough, on it's original CD reissue in the 80's, this was actually mistakenly credited to Willie Nelson the country singer! LOL Because the soundtrack is mostly him and his country tunes. Check out the images of the CD :
discogs.com/Dave-Grusin-Willie-Nelson-The-Electric-Horseman-Music-From-The-Original-Motion-Picture-Soundtrack/release/8964431
This tune and a vocal disco banger called "Disco Magic" shoulda been singles in my opinion. Great stuff.
