An ixi-style read of the vamp window, 4:30 to 9:00, after the funk head settles. This is the most guitar-dominant jam in the run. Trey leads hard over a Bb that Mike never leaves, working a bluesy major-seven against flat-seven shimmer, while Page climbs from silent to co-lead by the close. Every claim traces to a per-stem chroma and spectral-flux pass over the demucs lanes. The staves are transcribed off the guitar and bass stems with librosa pyin. Trey's C and G opening the vamp to six-nine at the surge are read straight from the audio.
Gumbo (jam peak, 4:30 to 9:00) — Phish · 2025-04-23 Bill Graham Civic, San Francisco
Bb vamp · Trey out front (4:30 to 5:37) · a bluesy major-7 over a fixed Bb
Mike settles the floor on Bb and keeps it. Trey leads immediately and hard, his guitar by far the busiest voice, working Bb, F, A, the triad with the major seventh, plus an Ab brushing as the flat seventh. The two sevenths shimmer against each other, a bluesy major rather than a clean one, the signature grit of a funk vamp. Page is nearly silent to start, holding back. This is the guitar's room from the first bar, Trey stating the whole color while the others lay out.
favorite momentTrey's major-7th and flat-7th shimmering against each other over Mike's fixed Bb, a bluesy major chord that will not pick a side.
Page steps in · the keys double the color (5:37 to 6:45) · Trey peaks, the piano joins
Trey hits his peak here, the loudest, busiest guitar of the window. Page answers by stepping in, his piano coming up to double the Bb, F, A, Ab voicing Trey is working, the keys reinforcing the bluesy major from underneath. Mike holds Bb steady. The vamp is unchanged harmonically, the change is Page entering the conversation, the jam thickening from one lead voice to two without leaving the Bb.
Page surges · the chord opens to six-nine (6:45 to 7:52) · the C and G widen the vamp
Page surges to near co-lead, his piano now a major voice, and the chord opens. A C and a G enter the stack, the ninth and the sixth, widening the Bb into a six-nine color. Trey keeps driving, now trading the lead rather than owning it. Mike stays on Bb. The bluesy vamp brightens and broadens as the keys push it open, two players now painting the same fixed root from different angles.
guitar and keys ride out (7:52 to 9:00) · Trey and Page both leading over the held Bb
The close, and it is a two-voice ride-out. Trey is back at full strength, Bb, F, G, A, and Page stays right with him, the guitar and keys both leading over Mike's unmoved Bb. The major-seventh A keeps ringing, the bluesy shimmer holding to the end. The jam that opened as Trey alone closes as Trey and Page locked together, the funk vamp carried out on one root and two lead voices.
favorite momentThe close where Trey and Page are both leading at once over the held Bb, the guitar that owned the open now sharing the wheel with the keys.
Gumbo's stems carry bass, guitar, piano, and vocals, with no separated drums or synth lanes, so Fishman is left unread and Page is read from the piano stem alone. Lead attribution comes from a per-stem spectral-flux pass, Trey the busiest voice every section, Page climbing from near-silent to co-lead. Window set by hand to 4:30, the settled Bb vamp after the funk head, since the automatic picker landed on the composed opening. Key Bb major at 0.807 correlation.