The Poudre River Irregulars Jazz Band 

BRING SOMEONE NEW TO OUR LIVE JAZZ EVENTS!!  

The Poudre River Irregulars play at a wide variety of events including:

A recurring monthly gig to great 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, Larry Lagerberg and Kevin Bollinger 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.

Our upcoming First Fridays at Avo’s are: 

 June 5th, July 3, August 7, Sept 4, 2026.

Be sure to mark your calendar

for the First Friday at Four pm of each month.  

Avogadro’s Number located at

605 S. Mason, Fort Collins, CO

Tickets at the door:

$15 per person for NoCOTradJazz Society MEMBERS.

$20 for non-member FANS

We accept cash or check; credit cards with processing fee.

If you join the NoCO Trad Jazz Society, you will save $5 per person at each First Friday at Avo’s event.

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MEMBERS AND FANS of the Northern Colorado Traditional Jazz Society can reserve a table
or an individual seat before 12 noon, day of the show. Individual seats guarantee that seats will be available, but will not be reserved for specific names.

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Other upcoming gigs:

Evergreen Jazz Festival:   July 24, 25 and 26!

Check it out online to see the PRIJB schedule – search for Evergreenjazz.org