And while Post-Rock was nice, Math Rock was my true love:
Some rock musicians who emerged in the 1960s and '70s experimented with unusual meters and structures. Notable examples include The Beatles, Henry Cow, Captain Beefheart, Frank Zappa, Genesis, Jethro Tull, Gentle Giant, Yes, Rush, King Crimson, The Police, Gong, early DEVO and Pink Floyd. The music of these and others from this era sometimes had hard rock or metal leanings, but such groups were generally classified as "progressive rock".
Canadian punk rock group Nomeansno (founded in 1979 and active as of 2007) have been cited by critics as a "secret influence" on math rock, predating much of the genre's development by more than a decade. Though never finding or even seeking mainstream attention, Nomeansno's music typically blend dark humor, punk energy and aggression, drastic shifts in tempo and structure and acclaimed instrumental prowess. An even more avant-garde group of the same era, Massacre featured guitarist Fred Frith and bassist Bill Laswell. With some influence from the rapid-fire energy of punk, Massacre's influential music used complex rhythmic characteristics.
In the 1990s a heavier, rhythmically complex style grew out of the broader noise rock scenes active in Chicago and other Midwestern cities, with influential groups also coming from Japan and Southern California. These groups shared influences ranging from the music of 20th century composers such as Igor Stravinsky, John Cage, and Steve Reich, as well as the chaotic free-jazz approach of John Zorn's Naked City, and critics soon dubbed the style "math rock."