For reasons unbeknownst to the rest of us, Fall Out Boy donned head-to-toe glow-in-the-dark skeleton suits for their performance of 'My Songs Know What You Did in the Dark (Light 'Em Up)' on 'Jimmy Kimmel Live.'

The band performed the late night show on Feb. 13, which we predicted would happen before the band even announced their reunion or new single. Though the costumes were a little distracting and a bit pointless, they didn't detract from the musicianship a bit -- they're every bit as tight as they were on ‘Folie a Deux.’

In addition to their late night live comeback, the band announced that their record, 'Save Rock and Roll,' was actually pushed up for an earlier release. Typically the opposite happens, so the band is likely capitalizing on their momentum and pleased with the outcome so far. The album will hit shelves April 15 and 16 globally, giving rock n' roll an early rescue.

“So when we got this all rolling we didn't expect it to be so crazy," bassist Pete Wentz admitted in a statement. "But we weren't kidding when we said we had the album done -- so why wait? It means the world to us the way you have welcomed us back."