The band consists of Dallas Good, Travis Good, Sean Dean and Mike Belitsky. Dallas and Travis are the sons of Margaret and Bruce Good, and nephews of Brian and Larry Good, who are members of the Canadian country group The Good Brothers.
In addition to their own recordings, the Sadies often collaborate with other artists, such as Blue Rodeo, Jon Langford, Gordon Downie, Andre Williams (on the 1999 country-influenced Red Dirt and the 2012 release entitled "Night and Day"), and have recorded, written and toured extensively as backing band for singer Neko Case. They have also toured and recorded with Jon Spencer and Matt Verta-Ray as Heavy Trash, as well as John Doe. They consider themselves honorary members of The Mekons. The Sadies' music is featured in many films and television shows, for example, Adult Swim's 12 oz. Mouse. An instrumental performed by the band can be heard in episode 5 of season 1, during a scene in which Rhoda the bartender is murdered. On May 18, 2010, The Sadies released Darker Circles CD/LP through Outside Music and Yep Roc Records. Darker Circles was a shortlisted nominee for the 2010 Polaris Music Prize and in 2012, won a juno award with Mike Roberts for best video.