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.

Four members of the teen pop group “ New Kids on the Block” pose backstage at the American Music Awards in Los Angeles, Jan. 22, 1990, where they won in the category Favorite Pop Album.

Best solo career: Michael Nesmith.

New Kids on the Block

Svengali: Manager Maurice Starr.

First record: 1986.

Expiration date: 1994.

Biggest hit: "Step by Step."

First reunion: 2008.

Best solo career: Donnie Wahlberg.

Backstreet Boys

Svengali: Manager Lou Pearlman.

First record: 1996.

Expiration date: 2002.

Biggest hit: "I Want It That Way."

First reunion: 2007.

Best solo career: No one, really.

N' Sync

Svengali: Manager Lou Pearlman.

First record: 1997.

Expiration date: 2002.

Backstreet Boys music group

Biggest hit: "Bye Bye Bye."

First reunion: Still waiting.

Best solo career: Justin Timberlake.

JON BREAM