The Future Is Not In Cloning

JOEL: Sir, your friend at GeniTECH has concluded cloning bands to create hits just isn't practical. For one thing, there's a 20-year lag time while the clones mature.
BART: Well... I guess it was sort of crazy, wasn't it? To think the future of music lay in human cloning?
JOEL: Heh... yes, sir.
BART: When clearly, from what you're saying, the future of music lies in a combination of cloning and time travel.
BART: Now, here's a number of a guy I know at Wormhole Depot...
JOEL: Sir, how do you know these people?