Lapfox
forget yeah.
Also ParagonX9 ('chaoz' songs ftfw) and NemesisTheory (omgggg polar groove) are both really superb artists, and C418 is one of the kings of music (minecraft, ward, sweden, mice on venus, droopy likes your face, höre, hotel music and it's complicated are some nice songs by him) in my opinion.
yeah, i don't know many other artists (besides NGxsomethingoranother who has really nice songs) because i'm a hipster when it comes to music.