Last night was the disk that had my most favorite TOS episode, "Mirror, Mirror. I had already knew from reading the linear notes that it would only be a partial score, but the biggest surprise for me there was that the cue that opened that episode was missing. It's also the cue that opens the episode "Obsession", but it sure fits in with the rest of "Mirror's" music. I'm hoping I'll find it on the second of the season two library cues, since it wasn't on the first (also last night's disk) either.
It's the first 10 seconds of the "Mudd's Perfidy" library cue (Season 2, Disc 5, track 36), adapted from the "Mudd's Women" score by Steiner.