# Sandfall Undertow v3b — The Sifting (bolder: swung 2-step, tempo-jump danger)

`sandfall-undertow-v3b` — levels: `calm.mp3` · `activity1.mp3` · `activity2.mp3` · `danger1.mp3` · `danger2.mp3`

Take B is the BOLDER second reading of the row (restless percussive house, B♭ dorian) — a genuinely distinct angle from Take A's straight four-on-the-floor. Four bold moves: (1) GROOVE — a broken/SWUNG-16th 2-step shuffle: the undercurrent flows UNEVENLY, with the sub OFF the grid (a syncopated long-short push landing just after the beat, no downbeat kick in calm/activity) and the shaker running swung long-short 16th pairs (the floor sifting). Idleness is the tension; the harmony stays calm modal (i–♭VII–IV-major(the dorian-6 G glint)–ii) while the rhythm does all the wariness. (2) LEAD — a hand-authored syncopated footwork line in call-and-answer cells (onsets on swung positions, not Take A's motif eighths): the lead steps and the offbeat soft-pluck ANSWER lands a third below in the GAPS between them — two voices trading. (3) INSTRUMENTATION — Activity L2 ADDS new color: a caveCelesta grain- shimmer arpeggio (the falling sand rendered PITCHED — the hourglass-cave signature — never a hiss) AND a stoneTom counter-pulse (dislodged floor- blocks) on the off-grid accents. Sand is pitched + struck only; the §3/§4 sandHiss Depth bed is RETIRED (correction 3). (4) DANGER TEMPO JUMP — the danger section runs FASTER at 116 BPM (a real section-tempo escalation Take A did not take). Danger L1 (ch8-9) is the undertow first felt: the footwork gone apprehensive (a low struckPiano stab — tone WARM, intimate dread — + a hesitant pluck tag) with a sandSpill one-shot pour SWEPT hard RIGHT (a composed granular pour, not a held hiss — the current pulling toward the chute) under a darkening B♭/F drone with sparse far booms; real unease, NOT near-silence. Danger L2 (ch10-11) is a GENUINE intensity jump for active flee: the kit crashes in (driving kick + snare backbeat) with a DRAGGING pickup yanking each downbeat early, an urgent swung hat current, and a SECOND sandSpill draining on the LEFT (the current closing in, out of sync with L1's right pour). New rhythmic material + density + tempo, not danger1 louder. Dread is abstract — the faster tempo, the stereo sand-pour sweep, the dragging pickup, register and density — never a literal chute/hiss foley, never chromatic darkening. Fully diatonic B♭ dorian throughout.