dont know if this has been done before on ns but thought it was a cool idea... anyways...
HOUSE: Pjanoo - Eric Prydz ... best fucking synth melody ever
Avicii - TBA "ID"
HIP HOP: Damn this is tough
Moment of Truth - Gang Starr
Notorious Thugs - Bone Thugs
DnB: anything Congo Natty probably Junglist
TRANCE: Not Giving up on Love - Armin (Dash Berlin 4AM remix) the part at 3:05 is unreal
REGGAE: Your House - Steel Pulse ... a classic
CLASSIC ROCK: this is impossible
Sympathy for the Devil - Rolling Stones
Good Times, Bad Times - Led Zeppelin
Dark Side of the Moon album - Pink Floyd
Hey Baby- Hendrix
ALTERNATIVE: Wolf Like Me - TV on the Radio
Random cool song: Roads - Portishead