Proving they're far from burned out, indie rockers Ash return to Japan next week to promote the release of "A-Z Vol. 2," the culmination of an ambitious project that saw the band releasing a single every fortnight via digital download.

Not being bound to an album concept has allowed Ash to explore a variety of genres including disco, electro and even heavy metal. "A-Z Vol. 2," the band's second compilation, was released Oct. 11 and drummer Rick McMurray was excited to experiment with so many of different styles.

"Unlike (our other) albums, we wanted the music to take many different directions," he says. "It kept the whole project feeling very dynamic, for both us and the fans."