It's not that the fellows in Guster are getting old. Indeed, Brian Rosenworcel scoffs at the notion.

It's not that the fellows in Guster are getting old. Indeed, Brian Rosenworcel scoffs at the notion.

"Yeah, we like to get together and watch some VHS tapes," the band's drummer sarcastically quipped.

Rosenworcel did acknowledge that making records can be a challenge, given the band members' changing priorities -- families, side projects -- and geography.

"It's not like it was in 1998 when we were all living together in the same apartment, with our instruments always set up and we would eat our cereal and then start playing," he explained.

"That's not a healthy way to live."

A summer tour, by comparison, is not so bad. Out this summer with Barenaked Ladies and Ben Folds Five, Rosenworcel figures he'll actually get more sleep on the road than he has been getting at home, where he has twins who are not yet a year old, plus a 5-year-old daughter.

He added that it's possible some progress will be made toward finishing songs they've been writing. The band hasn't released a new studio record since 2010's Easy Wonderful.

"We're sitting on some potent material," he said. "We have like nine songs almost finished. What we do have so far is really great."

"We've never really had a breakthrough song that propelled us to superstar status," Rosenworcel said.

"It's been a constant progression (from one album to the next), which leaves us always feeling like we have something to prove."

Don't expect to hear any of the new stuff on this tour, though.

"Just because you write a song doesn't mean it's ready to be performed. Besides, it's not like a song's debut is the song that just crushes it in the set."

The constant proximity, Rosenworcel hopes, will result in some progress being made toward the songs' completion.

"What will really help us is being stuck on a bus together," he said.

In the meantime, Guster's set list will get the guys' attention.

"Joining forces (with these other bands) means the fans are going to have a great time," he said.

"But all of these bands have enough material to play for two hours. That isn't gong to happen, so we're aware we need to hit all the high points."

At the same time, Rosenworcel expects not to repeat any performances from one night to the next.

"It gets boring if you play the same set night after night."