Remember enhanced CDs?
Not too long before Facebook, Instagram, Snapchat, Twitter and YouTube became the go-to destinations for music fans, record labels released albums with exclusive bonus content. And the now defunct Jive Records—home to Backstreet Boys, Britney Spears and 'N Sync—executed them with precision. When Britney's debut album ...Baby One More Time came out in 1999, for example, the initial imprint featured a hidden message after "The Beat Goes On." After thanking her fans, she teased tracks from the Backstreet Boys' Millennium.