Few songs have lived nine lives in American pop culture quite like “Shout.” From its soulful 1959 Cincinnati birth to its Animal House revival and its eternal role as a wedding-reception floor-filler, this entry explores the wild history of The Isley Brothers’ greatest party anthem — plus the surprisingly tricky science behind the “a little bit softer now” squat that stumps half my dance floors every Saturday night. The moment John Belushi and Animal House introduced a new g