"Ænema" is a song by rock band Tool, released as the third single from their second major-label release Ænima. Adam Jones made a video for the song using stop-motion animation; it is included in the Salival box set. The song reached number twenty-five on the US Mainstream Rock Tracks chart in August 1997. The song makes extensive use of hemiola, a musical technique in which the emphasis in a triple meter is changed to give the illusion that both a duple and a triple meter occur in the song.