On lp Toys In The Attic. Run DMC weren't even sure if that was maybe the name of the band they sampled this guitar intro from.
Run DMC [with Steve Tyler (vocals) and Joe Perry (guitar) contributing; the riff had recently become a regular among DJ's on New York block parties]
Erik-Jan Hilterman [as Hoest]
Sugababes vs Girls Aloud [charity for Comic Relief; n°1 UK]
Run DMC's cover put Aerosmith back on the map. Def Jam boss Rick Rubin likes both hip hop and heavy metal. That helps.