What I find most interesting is the fact that Ron Jones is the only TNG composer to actually use the Goldsmith theme within the episode. McCarthy never did that (there is the saucer seperation sequence, but that was tracked music from the end credits. I think it's too bad Jeff Bond never asked McCarthy or Chattaway why they didn't use the Goldsmith theme during episodes.
McCarthy did express his fear of not wanting to repeat anything, so maybe that was part of the reason. He or the producers did not want any music to sound tracked, so he consciously created scores from scratch and rarely reused something he created before. But ironic since the very first episode has the tracked Goldsmith music.
McCarthy's efforts didn't always work. I occasionally hear stuff reminiscent of the Generations score throughout TNG. Plus in early TNG, you could always detect a Jones or McCarthy episode within a few notes. Were there any other guest composers?
If I recollect, there was no mention of the guest composers like the veteran Fred Steiner (a very nice TOS-like score) or John Debney.