He has performed with Griffin House,[1][2] Cerys Matthews,[3] Derek Webb[4] and Sandra McCracken, Mat Kearney, Taylor Sorensen & the Trigger Code, and Counting Crows.
This was a catalyst for his involvement in school orchestras, jazz ensembles, choirs, and musical productions.
From 1996 to 1999, while living in Bolivar and Springfield, Missouri, he played in a ska band as well as various jazz groups.
He immediately began writing and performing with numerous groups, from rock bands to orchestras.
Since 2008, Irwin has collaborated with The Deep Vibration, Griffin House, Tristen, The Bittersweets, Roman Candle, The Nashville Jazz Group, Thad Cockrell, Andrew Peterson, Randall Goodgame, Stephen Gordon, Sandra McCracken, Keegan DeWitt, Caitlin Rose, Andrew Combs, Rayland Baxter, Shelly Colvin, among others.