Philadelphia quartet Rosetta push the boundaries between metal, progressive rock, post-rock, space rock, and hardcore punk, employing an experimental songwriting technique filled with chaos and atmospherics. Their sounds range from Pink Floydian / progressive rock sonic layering to walls of pure static ambience to crushing, sweeping sludgey riffage. Their first album (The Galilean Satellites, 2005) was an especially ambitious project: the goal was to record two discs of equal length (one a metal album...