I hope this set only features music by McCarthy and Chattaway. David Bell always reused his own material and If you look up the term sonic wallpaper in the dictionary you'll find a picture of Paul Baillargeon.
It wasn't so much Bell reused material as he just used the same chord progression over and over and over and over again (and especially for epic moments, like the mines getting phasered in "Sacrifice or Angels" or Chakotay coming across the cave of aliens in "Waking Moments."
(In the first example, C-minor to A-Major)
His material got more distinct on Enterprise but he left that show midway through the second season (for whatever reason).