The Mars Volta - Octahedron 2LP

The two best double barreled names in the business,
Cedric Bixler-Zavala and Omar Rodriguez-Lopez, bring
elements of hardcore, psychedelic rock, and free jazz to
their heavy prog rock sandwich. 2009's set is a quieter
and more subdued Mars Volta album. So, still madder,
bigger and more eclectic than almost anyone else, then...