A documentary profiling the history of Tucson, Arizona's eclectic music scene. The past two decades have seen a number of singular talents emerge from Tucson, including Giant Sand's Howe Gelb, who has been called "the godfather of the alt-country movement," seminal blues slide-guitarist Rainer Ptaček, and original cow punk Al Perry. The city has also spawned more popular acts including Calexico, the Supersuckers and Machines of Loving Grace.