He is best known for his work as a member of the band My Morning Jacket and as a touring musician with Roger Waters[1] and Ray LaMontagne.
The group amassed a large following beginning in the early 2000s, in part due to their powerful live performances.
[5] In 2017 and 2018, Koster was part of the Roger Waters Us + Them world tour[6][7] and subsequently appeared in the companion film Us + Them.
[10] Koster has also collaborated with Neko Case,[11] T Bone Burnett,[12] City & Colour, Strand Of Oaks,[13] Carl Broemel, Young The Giant,[14] Laura Viers, Sam Outlaw, and Delta Spirit.
[15] Prior to joining My Morning Jacket, Koster worked on several television documentaries as an associate producer, including Modern Marvels and Haunted History.