Callen O'Brien is a bassist and percussionist currently living in Los Angeles. He graduated from the California Institute of the Arts in 2024. He is currently touring as a bassist with mehro and has been in his recording and touring band since 2021. In addition to his work with mehro, Callen is an active bassist in the LA music scene and has recorded on over 100 records. He regularly does session work and plays with a multitude of artists. He also works as a social media manager for Kevin Nealon, Victor Wooten, and Daric Bennett among others.
