"Question!" is a song by Armenian American rock band System of a Down, released as the second single of their fourth album Mezmerize. The song was premiered on Los Angeles, California radio station KROQ-FM on May 23, 2005 and was released to alternative and rock radio stations on July 12 of the same year.The song is sometimes compared to one of System of a Down's other songs "Aerials", which also deals with the nature of life in the lyrics.