Manufactured boy bands don't last forever — but they do have reunion tours. Here's a look at the big four who predated One Direction.
The Monkees
Svengali: TV producers Bob Rafelson and Bert Schneider, music producer Don Kirshner.
First record: 1966.
Expiration date: 1969.
Biggest hit: "I'm a Believer."
First reunion: 1986.
Best solo career: Michael Nesmith.
New Kids on the Block
Svengali: Manager Maurice Starr.