Undertale, Final Fantasy, Nier automata. Oh, and Dark Souls has very peculiar and cool music too! My Top 4 ! (─‿‿─)
My personal favorite track is Endless PossibilityI agree! Especially as someone who already loves rock music as it is, I really like a lot of the vocal themes from the Adventure era games. My love for those games' soundtracks is also why I really like Crush 40. Speaking of Crush 40, they're actually coming to a Milwaukee convention in April, and I really REALLY want to go see them.
I also really like the Sonic R soundtrack because... who doesn't?