[3] His "extraordinary eclecticism"[4] has led to performances with such diverse artists as Wynton Marsalis,[5] Lou Reed, Evan Parker, Billy Joel, the Maria Schneider Orchestra, Bertha Hope, Herbie Hancock, Conor Oberst,[6] Christian McBride,[7] Mike Pride,[8] Kenny Barron, Darcy James Argue's Secret Society, Bill Laswell, Peter Evans,[9] Tyshawn Sorey, Ingrid Laubrock,[10] Ava Mendoza,[11] Mick Barr, and Tom Rainey.

Irabagon's many projects as bandleader include a quartet with Luis Perdomo, Yasushi Nakamura, and Rudy Royston,[12] as well as a trio with Mark Helias and Barry Altschul.

[20] In 2001, Irabagon moved to New York City[21] and enrolled in a master's degree at Manhattan School of Music;[1] after completing his MA, he went on to study in the jazz program at Juilliard.

[26] Later that year, Irabagon was announced winner of the 2008 Thelonious Monk Jazz Competition by judges Wayne Shorter, Jimmy Heath, Greg Osby, Jane Ira Bloom, and David Sánchez.

[35] He marked Irabbagast's debut with two releases as bandleader: I Don't Hear Nothin' But The Blues Volume 2: Appalachian Haze, a trio with Mick Barr and Mike Pride; and Outright!