Mazembe @ 45rpm, Vol. 1

A sprawling collective that rolled so hard you won't need it to rock, OSM fused the billowing rumba style of their native Congo with the harder bite of benga, the local flavor of Kenya, where they relocated in the mid-1970s. This comp is one ascending, spiraling guitar jam after another, and the vocal roundelays (try "Naleki Na Ba Zone") are as gorgeous as the guitars.