How the Eventide H910 Harmonizer Shaped Mick Taylor’s 'Sway' Solo

The most famous detail from the Sticky Fingers sessions is that Glyn Johns ran Mick Taylor’s guitar solos through an Eventide H910 Harmonizer set to a slight +9 cents upward pitch shift. That subtle detune created a ghostly, slightly off-kilter doubling effect — not enough to sound like two guitars, just enough to make the notes shimmer and feel slightly unhinged.

On “Sway,” that setting gives Taylor’s bends and vibrato an almost psychedelic, liquid quality. The harmonizer didn’t just thicken the tone; it added a microtonal smear that made the solo sit oddly in the mix, complementing the song’s seasick, boozy mood. No manual with exact settings survives, but engineers who worked the desks later confirmed the +9 cents shift as the go‑to for those sessions.