Rock act Guster is eyeing a spring 2006 release date for its next Reprise album, "Ganging Up on the Sun." Among the tracks tipped for inclusion are "Hang On," "The Beginning of the End," "C'mon," "One Man Wrecking Machine" and an as-yet-unnamed track featuring vocals from a cashier who works at a food shop near where the band recorded in Woodstock, N.Y.

"I definitely think this is our most ambitious album and we were a lot more fearless going into this one musically, lyrically and production-wise," vocalist/guitarist Ryan Miller tells Billboard.com. "In some ways, these songs are all over the map in texture and sound and tempo and feel but I hope, and think, that there emerges a through line that draws them all together. What that line is, I don't really know. Melody? Pop sensibility?"

"Ganging Up on the Sun" is the follow-up to 2003's "Keep It Together," which debuted at No. 35 on The Billboard 200 and has sold 267,000 copies in the United States, according to Nielsen SoundScan.

"Each of our albums have progressed logically from the one before," Miller says. "'Lost and Gone' was the last chapter of the 'bongo drum' era and 'Keep It Together' was us getting our sea legs with new instrumentation and a renewed sense of creativity. With the addition of [multi-instrumentalist] Joe [Pisapia] in the last two years, it felt like we were finally hitting some sort of writing stride."

"I think we step into the studio every time hoping to make a classic album," Miller continues. "I certainly can't say if we achieved that goal this time, but it's definitely the closest we've come."