[Inhuman]

Rap/ Hip-hop:
Noah23
Sixtoo
Hangar 18
Mr.Lif

Rock:
Animal Collective
Grandaddy
Preston School of Industry
Q and not U
Robot Kill City

Metal:
Goatsnake

No-wave / Noise:
Sonic Youth
Arab on Radar
AIDS Wolf
Wolf Eyes
The Flying Luttenbachers
The Hospitals
Lightning Bolt
Thurston Moore
Free Kitten

Sludge:
Khanate
Sunn0)))
Wraiths
Boris

Dance:
Diplo
Debbie Deb
Dntel

Hardcore & Emo:
Daitro
Raein
Converge
City of Caterpillar

Punk:
The (International) Noise Conspiracy
Minor Threat
Fugazi

Acoustic:
Jim O'Rourke
Elliott Smith

Folk & Blues:
The Silver Jews
Robert Johnson

Jazz: (I need some reccomendations myself, I'm definately checking out Noumenal's list tonight)
Sun Ra