Dos (from the Spanish word for "two") is an American rock group composed of Mike Watt and Kira Roessler, who both sing and play bass guitar. Critic Greg Prato describes their unusual instrumentation as "a haunting yet intriguing and original sound."Both performers have substantial experience in pioneering punk groups: Watt has been a member of The Reactionaries, Minutemen, Firehose, Banyan and the reunited lineup of The Stooges, while Roessler was in Black Flag for about two years.