Forty Six & 2

The song's harmonic identity is deliberately narrow — D Phrygian dominant sustained across most of the track — but that stasis is the point. The raised third (F#) gives the riffs their tense, ancient-sounding edge while the flat second (Eb) creates the signature half-step pull that makes the main riff instantly recognizable. Where the song earns its complexity is rhythmic: Tool superimpose genuinely independent meters simultaneously, so the same chord sequence shifts its gravitational feel depending on which instrument you track. The harmony doesn't need to modulate because the metric architecture does all the work of creating tension and release.

Written by all four members — Adam Jones, Danny Carey, Maynard James Keenan, and Justin Chancellor — 'Forty Six & 2' grew out of the collective writing process Tool used throughout the Ænima sessions, with instrumental architecture built in rehearsal before Keenan layered vocals and lyrics.

Released as a promotional single from Ænima in 1997, 'Forty Six & 2' became one of Tool's defining tracks — built on D Phrygian dominant riffing, Danny Carey's simultaneous layering of 7/8 over 4/4, and Maynard James Keenan's lyrics about psychological transformation. Rolling Stone placed it at #53 on their 100 Greatest Heavy Metal Songs of All Time in 2023.