If you go

What: Perpetual Groove

When: 9 p.m. Friday

Where: Fox Theatre, 1135 13th St., Boulder, 303-443-3399

Cost: $13-$15

More info: foxtheatre.com

Or:

When: 9 p.m. Saturday

Where: Bluebird Theater, 3317 E. Colfax Ave., Denver, 303-377-1666

Cost: $20-$25

More info: bluebirdtheater.net

T he Perpetual Groove that will take the stage at the Fox Theatre Friday is older, wiser and even more confident than the band you might remember.

The band never really went away, but they've been relatively quiet over the past few years, and keyboardist Matt McDonald took some time off. Now the jam band is back in the original form and going at full force, with the wisdom of years behind them.

"We took some time off this summer, intentionally, so everyone could adjust to being back. This fall is our first swing really going at it again in four years," McDonald said. "Now that we're all adults, we all really know where we want to be as a band. We're comfortable."

In addition to getting back on the road, Perpetual Groove is working on a new album. They're in pre-production now and hope to release it in March or April of 2013. It's not a total departure from the old material, but it will definitely be different.

"We're going to actually be taking over the reins more than ever with any other album, which goes back to being guys who, more than ever, have a clear picture of what we want to paint with this album," McDonald said. "There are songs are entirely built around improvisation and we're not afraid to have our songs that aren't anymore. It's so great to say something in two and a half minutes. Not everything has to be an epic journey."

McDonald said the record also displays a Perpetual Groove that's working with more sounds and electronic tools in the studio, using "things that we didn't know how to in the past."

But the band, at its core, remains the same. Part of what makes Perpetual Groove strong, and maybe what keeps them going, is that each member seems to maintain a strong individuality.

"It's not necessarily the story of a bunch of guys growing up together, but there's an immediate attention to what happened when the four of us played," McDonald said. "Each one of us still gets to be exactly the kind of player we are inside of this band. That, I think, is pretty unique. And now more than ever, since we're all grown men, we're all super aware of what it is that we do best. We've been doing that especially in the past couple of months."

In addition to tonight's Boulder Theater, Perpetual Groove is playing the Bluebird Theater tomorrow night, so you have two chances to catch the jams and spectacular light show.