Plain White T's recently wrapped up a headlining tour in support of their new album Big Bad World and the platinum selling hit single, "1, 2, 3, 4,". The track's much-seen video has been featured on VH1's Top 20 Video Countdown and earned a spot in heavy rotation at MTV, Fuse, MTV Hits and mtvU. The group recently performed the song on Late Night with Jimmy Fallon. The tour, dubbed "Three Part Harmony: A Show in Three Acts," has the quintet delivering a show in three acts, one apiece devoted to rock, acoustic and a medley of fan favorites. Fall tour dates will be announced shortly.

Before kicking off the second leg of the tour, lead singer Tom Higgenson and bassist Mike Retondo visited Daryl Hall's New York home to jam with the legendary singer/songwriter on a set that included their own hits "1, 2, 3, 4" and "Hey There Delilah," Daryl Hall's "So Close" and a soulful cover of Junior Walker's "Shotgun.".

Said Higgenson: "We had an awesome time with Daryl and the band. It was a great experience and we really enjoyed playing with such a legendary artist and musicians."