Guster is an American alternative rock band formed in 1991 in Boston, Massachusetts. The group consists of members Ryan Miller, Adam Gardner, and Brian Rosenworcel. Known for their unique sound that blends acoustic and electric elements, Guster often incorporates harmonies and upbeat melodies in their music. The band gained popularity in the late 1990s and early 2000s with albums like Lost and Gone Forever and Keep It Together. Their style features a mix of folk, rock, and pop influences, appealing to a diverse audience. Guster continues to tour and release new music, maintaining a dedicated fan base.