Rockers Switchfoot [ tickets ] have confirmed a slew of new dates for their upcoming spring tour, which backs last fall's "Nothing is Sound."

The trek kicks off in mid-March, and dates now stretch into late April. Details are shown below; more dates will be announced, according to the band's website.

"Nothing is Sound" surfaced in September and features the hit single "Stars." The set follows the group's multi-platinum 2003 breakthrough, "The Beautiful Letdown," which spawned the hits "Dare You to Move" and "Meant to Live."

Switchfoot, which performed around 400 shows from 2003 to 2005, recorded "Nothing is Sound" while on tour, and used their live performances to work on the new material before committing it to disc.

"That was one advantage we had on this record," frontman Jon Foreman said in a press release. "We'd been playing some of the songs, like 'Daisy' and 'Politicians,' off and on for a while. We got to road test them, check the tires, and switch things up before we ever pressed the 'record' button. The audiences determined which songs were selected and how they turned out.

"The trickiest part is trying to capture what we do live and bottle it up into the 1's and 0's on a CD," he continued. "It helped to play these songs live, feel that energy, and say, 'OK, this is what we have to match.'"

The month after its release, "Nothing is Sound" was gold certified, signifying US shipment of 500,000 copies.