You probably know two obscure libraries that existed in the late-60s and 70s respectively, so let's dig deeper on its information.
The CBS Records EZ Cue Library was formed in the late-1960s as the production music arm of CBS Records. Its most notable composers include Wilfred Josephs, Trevor Duncan, Fred Steiner and of course famous movie score composer, Jerry Goldsmith. But one of the most famous albums came from German composer Gerhard Trede in which one of the tracks in an album named Jazz was known as "Jazz Blues", which would later be made famous in the gaming world in Fallout: New Vegas. Trede's other tracks have been featured as other songs in New Vegas with two of them being included in Fallout 3. Here is Jazz Blues, heard in all its glory.
Now, let's talk about library no. 2.
In 1970, the National Broadcasting Company (NBC), decided to release specially made background music for use in other productions through the NBC Background Music Library. Featuring tracks by John Cacavas, Ray Ellis, Eugene Cines, Walt Levinsky, and Bill Giant, the library produced over 100 albums. Here is an example of a John Cacavas track.
What are some examples of these two libraries heard in other media?