I've never really watched this myself before, except for recently my young nephew (who watches anything he finds) has started watching this on and off and I certainly noticed the music.
I would say it ranges from the quirky to the creepy in an interesting enough way. The music itself doesn't sound great in terms of the sound quality on the actual show. This is why I feel it could be interesting to listen to on an actual album release from hopefully a much better source, so count me in.
I for the most part really liked the music from the old 80s He-Man and ThunderCats shows and I never really watched He-Man either whilst getting into ThunderCats over the last decade for it's Anime inspired art style and I had to get the music for that, just for like GhostBusters, it's "killer" theme song.