Dos is a two-bass indie/punk band featuring the former husband-and-wife team of Mike Watt (Minutemen, fIREHOSE, The Stooges, Banyan) and Kira Roessler (Black Flag). Watt and Roessler (who does not use her surname professionally) met not long after Roessler replaced Chuck Dukowski as the bassist of Black Flag in 1984.
The actual origin of Dos came about in the fall of 1985 when Watt and Kira, who were already dating, began improvising two-bass jams in their free time, sometimes recording these results into Watt's four-track recording machine.