The Poudre River Irregulars play at a wide variety of events. Public gigs include a variety of scheduled appearances (concerts sponsored by jazz societies, for instance), and a recurring monthly gig to sellout crowds at Avogadro's Number that takes place on the First Friday of every month

You can book the Poudre River Irregulars. We play for parties, weddings, swing dances, church services and funeral marches, plus more!  In addition, the "Mini-PRI", a stripped-down version of the band, is available for groups with tight budgets. To arrange private bookings, use Contact above in the menu.

We hope you'll come and hear us play.

The "Regular Irregulars" are Charlie Smith or Larry Lagerberg on trumpet, Len Kellogg on trombone, Clark Burnside on clarinet, Ray Leake on piano, Alan Sparks on bass, Rory Thomas on banjo, and Oscar DeZoto on drums.


4:00 to 7:00 pm

at Avogadro's Number located at

605 S. Mason, Fort Collins, 

Hot Jazz with the Regular Irregulars

General admission $12, students $4
$8 for members of the

Northern Colorado Traditional Jazz Society

Become a member today!

Nov 1st:
First Friday at Avo’s 4 to 7pm.


Nov 3rd:

9 am Service

All Saints Episcopal Church

3448 N Taft Ave, Loveland



Dec 6th:

First Friday at Avo’s with UC Denver Claim Jumpers student band starting at 3pm; PRIJB with two trumpets, Charlie Smith & Larry Lagerberg, 4 to 7 pm.  This will be the first recording session for our 25th Anniversary CD.  Please attend and participate - audience reaction is important on our CD’s.

Jan 3rd:
First Friday at Avo’s with Larry Lagerberg on trumpet.  4 to 7pm.

Jan 4th:
At Model A Club:  a private party, Eaton Country Club, time TBA

Jan 17th:
At Peak View Jazz Club.  U of Northern Colorado Student Center, 501 20th St, Greeley, CO 80639
7:30 to 9:30pm.  Music Cost:  $15, non-members, $10 members, $5 students.  Buffet $25
Reservations 970-353-2267

Feb 7:

First Friday at Avo's, 4-7pm w/ Charlie Smith and Larry Lagerberg; this will be our next recording session for the 25th Anniversary CD 

Come Join us!