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 mus

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.