I remember the early Minecraft musics from C418 to be relatively unconventional, especially some of the jukebox discs.
I started playing Minecraft again recently and while it sounds like it’s the same artist, and it’s still somewhat contemplative, it’s not dissonant anymore.
It's not the same artist. C418 had a very good deal with Notch's Mojang, letting him keep rights. Microsoft demanded that he sign over the rights to further music as work for hire. He refused, as a result the newer music in Minecraft is made by other composers who signed on to that deal and try to make music fitting with C418's style.