I Bet It Was A Massacre was a post-hardcore band formed in 2008 in Tuscon, Arizona, United States. They released 8 Rules for the Pool in 2009. The band split up in 2010. Formed in October of 2008, I Bet It Was A Massacre combines music that inspires them from The Black Dahlia Murder to Lady Gaga and fans can hear their wide range and love for music. Without a specific genre, the music mostly incorporates electro into a screamo/metal style of music with hardcore breakdowns.