Ænema is a song by American rock band Tool, released as the third single from their second studio album, Ænima, on August 9, 1997. The track is characteristic of the band's blend of progressive structures, heavy alternative metal textures and lyrical material that mixes satire, personal reflection and social critique.

Musical characteristics

The song features shifting time signatures, layered guitar and bass parts and dynamic drumming that underscore a deliberate, often brooding vocal delivery. Tool's arrangements are structured to build tension and release across extended sections rather than relying on conventional verse–chorus repetition. Listeners and critics have noted the track's emphasis on mood, rhythm and textural contrast.

Themes and influences

Lyrically, "Ænema" is commonly read as a commentary on cultural self-delusion and the idea of a cleansing or reset for a society perceived as hypocritical. The album and song are widely acknowledged to reflect the influence of comedian Bill Hicks; his critiques of consumerism and media appear to have helped shape some of the song's themes. Interpretations vary, but the imagery tends toward catharsis and satirical outrage rather than literal prescription.

Release, reception and awards

Upon release the single received significant radio play on alternative and rock stations. On the Billboard charts it reached a top position on the Mainstream Rock listing, peaking at number 25. The recording earned wide critical attention and in 1998 the band won the Grammy Award for Best Metal Performance for "Ænema," marking a notable moment in the group's mainstream recognition.

Visuals, live performance and legacy

Tool has supported the song with visually driven live performances and distinctive video material that echo the track's unsettling, transformative themes. Over time "Ænema" has become one of the band's signature pieces, often cited in discussions of the group's impact on progressive and alternative metal in the late 1990s. Its combination of technical musicianship and provocative subject matter continues to attract analysis and strong fan interest.