Which was originally used in Where Silence Has Lease, he originally wrote a different piece for Booby Trap (you can find it on YouTube)
but it was rejected. The original music was much more similar to the music in the rest of the episode.
The tracked piece in Booby Trap sounded completely new to me because in its original use, it was mixed so quietly that it made virtually no impact. This happened more and more to Jones' music as the series went on. If they couldn't get him to change the cue (or if there was no more time), they'd just turn it down in the mix.
(Witness the climax to Night Terrors. The music is barely audible and the chorus is mostly dialed out but on the soundtrack, it's glorious).
