One could make the argument that The Clash's "London Calling" is one of the riskiest moves in rock history. After two well-received and straightforward punk albums, the quartet from London threw fans, critics and the entire rock world a curveball in 1979. Spanning at least three genres in 65 minutes, the double LP was not only twice as long as anything the band had recorded prior, but also about the last thing anybody expected from one of the founders of the British punk movement. It could be considered just as risky, then, that a concert promoter would find it feasible to actually put together a bill of bands of equally varying styles to cover the classic album in its entirety. However,