In late 1991, Barrett joined the Screaming Trees, a seminal band in the emerging Seattle sound. The Trees made three critically acclaimed albums during that decade, maintaining a relentless touring schedule that took them all over the western world. Ultimately, this grueling routine would lead to the break up of the band in 1999, at which point the band members decided to pursue different careers.
During this time, Barrett continued to work as a session musician. playing on or producing over 50 albums including recordings with artists such as: R.E.M. side project The Minus 5, the French band AIR, blues legend Cedell Davis and Queens Of The Stone Age.
In 2001 Barrett founded the non-profit record label, Fast Horse Recordings, and has released ten albums to date, including albums by Brazilian, Peruvian, Iraqi and Nigerian artists, as well as his own projects and solo albums.