Guster is an American alternative rock band formed in Somerville, Massachusetts. Founding members Adam Gardner, Ryan Miller, and Brian Rosenworcel began practice sessions while attending Tufts University and formed the band in 1991. The members met during the freshman Wilderness Orientation program in August of that year, playing publicly together as a trio two months later at the Midnight Cafe coffee house set in the common area of the Lewis Hall dormitory. While attending Tufts, the band lived at 139 College Avenue in Somerville.

Ryan Matthew Miller is an American musician. He is the lead singer for the alternative rock band Guster playing guitar, piano and bass.