Greyson Chance, Cody Simpson and others about to steal Justin Bieber's thunder

What does 16-year-old Justin Bieber share in common with musical icons Bob Dylan, Bruce Springsteen, Nirvana and Britney Spears?
They all, at one time or another, have inspired record company executives en masse to aggressively sign up artists who sound, and sometimes even look, decidedly like them. Dylan’s brilliance sparked the signings of folkies from Donovan to Steve Forbert; Springsteen led