NEW YORK  - Las Vegas pop-rock outfit Panic! at the Disco is gearing up for the March 29 release of its first album since two members amicably departed the quartet in 2009.

"Vices & Virtues" marks the follow-up to 2008's "Pretty. Odd.," which debuted at No. 2 on the Billboard 200 and has sold 419,000 copies to date, according to Nielsen SoundScan. The first single, "The Ballad of Mona Lisa," is due out February 1.

Singer/multi-instrumentalist Brendon Urie and drummer Spencer Smith will seed the album with a handful of theater dates in New York and Europe in early February. Their former bandmates, guitarist Ryan Ross and bassist Jon Walker, went on to form the Young Veins.