High Quality Content by WIKIPEDIA articles! Ragged Atlas is a studio album by the United States experimental rock group Cosa Brava. It was recorded in San Francisco in December 2008 and was released on March 5, 2010. Cosa Brava is an experimental rock and improvisation quintet formed in March 2008 in Oakland, California by multi-instrumentalist and composer Fred Frith (Henry Cow, Skeleton Crew, Keep the Dog). The band comprises Frith on guitar, Zeena Parkins (Skeleton Crew, Keep the Dog) on keyboards and accordion, Carla Kihlstedt (Sleepytime Gorilla Museum) on violin, Matthias Bossi (Sleepytime Gorilla Museum) on drums, and The Norman Conquest on sound manipulation.