In the SG-1 episode "Chimera", Pete takes Sam to a dance. When they arrive, the band is playing a tune which starts off sounding like "In the Mood", except it isn't. Later, the music sounds like a mash-up of "Starlight Serenade" and one or two other tunes I don't recognize.
Is the music being played actual big-band era compositions which just happen to sound like the familiar titles I mentioned? If so, what are the titles?
Or, was it composed for the episode to make you think it is "vintage" music without actually being such, in order to avoid copyright clearance issues?