LOL...Clearly you do not know much about a studio setting. They can load beats from other songs. They do it all the time. Whites could do it as well but most make their own music. Anyone can do this nonsense. It is black that have made an artform from it because they don't know how to play regular instruments. Yes, they usually sample their beats from old rock and r&b songs. Most rap beats are not original at all. A few rock songs off the top of my mind that were sampled by Black rappers...Every Breath I Take by the Police was sampled aka ripped off by Puff Daddy for his song I'll Be Missing You. The loser moron extremely low IQ'd rapper from Atlanta Lil' John stole ahem...sampled Ozzy Osbourne's Crazy Train for one of his beats. Jay Z ripped off a Doors song, so did Snoop Doggy Dogg when he ripped off the music from Riders On the Storm, Puff Daddy did a song called Come With Me, and the music that he rapped over was Led Zeppelin's Kashmir, the list is endless.......Most all rap songs beats are sampled from old Rock and R&B or Funk songs. They're thieves, not musicians.