Set structure: the phases of a night, mood, and movement

How a DJ set is shaped over a night, and how movement in the room can follow that shape. This is the knowledge A³ Motion’s shipped library (its sets, clips and actions) was built on, written 2026-09-28 to 2026-10-03. For what the ear can follow at all, see motion perception; for how much to move at once, see playing in 3D.

The phases of a night

A³ names its sets after the phase of the night they are for, so a set list reads like a running order:

Warmup · Groove · Build · Peak · Drop · Break · Dub · Deep · Float · Closing

Phase

Movement character

Warmup

slow, high, open

Groove

jumps on the beat grid, at ear height

Build

opening, speeding up, rising

Peak

wide, fast, lifted

Drop

hard, angular, close

Break

still, suspended, drawn in

Dub

throws, swings, near and far

Deep

low, slow, dark

Float

overhead, slow, smooth

Closing

descending, slowing, settling

Four moods were added later as their own sets (2026-10-03): Tribal (percussive, close to the ground, call and answer), Acid (one figure turning slowly, resonance), Ambient (weather), and Tension (siren), plus Space — the set to use when the room should hear the movement (see the MJ playbook).

Each phase has an obvious next phase, and a performer wants a single press that takes them there on the downbeat. In A³ that is the Cue pad: Warmup → Groove → Build → Peak → Drop → Break → Build again; Dub → Deep → Float → Closing → Warmup. Two escapes exist in every library: a dub escape and an emergency calm.

Build-up, drop, breakdown

  • The build widens, rises and opens the filter, and speeds up.

  • The drop releases it all at once — on the one.

  • The breakdown strips it back.

  • Call and response between a narrow and a wide sound is a standard drop device.

A movement that follows this: widen and lift during the build, snap to the front (or freeze) on the drop, pull in and slow down in the breakdown. See spatial FX for the riser and drop gestures in 3D.

Mood: energy and pleasantness

The mood meter (Yale’s RULER tool, on Russell’s circumplex model) uses the two axes music-emotion research uses throughout: energy (arousal) and pleasantness (valence).

unpleasant / tense

pleasant / open

high energy

driving, dark, industrial

euphoric, peak, hands-up

low energy

brooding, suspended, deep

calm, floating, arriving

What research and practice say about movement and mood:

  • Speed and regularity carry energy. Faster rotation and tempo-locked rates read as more energetic. Far above the hearing limit for rotation, movement stops being heard as movement and becomes a vibrating texture (Stockhausen’s rotation work).

  • Approach (looming) raises arousal. Loudness increase is the strongest cue, then the direct-to- reverberant ratio. Approaching sounds are rated more arousing and more unpleasant than receding ones, most of all for sounds that are already negative.

  • Height carries lift. Listeners map high to up; moving elements upward reads as the section getting bigger. Low and under the floor reads as weight, darkness and pressure.

  • Club reality. In club music, panning is mostly subtle and purposeful, because many systems are effectively mono. Movement works best tempo-synced; free-running LFOs drag against the groove. Dub and dub techno use the mixing desk as the instrument: sends, sweeps, throws.

Movement parameter

more energy

less energy

more open

more tense

speed / spin

faster

slower

shape

angular (corner, square, zigzag, star)

smooth (circle, ellipse, rose, lissajous)

continuous curves

angular, jumps

end of a pass

bounce, random

loop, pause

loop, forward

reverse, bounce

height

up, overhead

down, towards the floor

reach

wide (throws)

narrow

wide, enveloping

narrow and close (looming)

accent attack

fast (it hits)

slow (it swells)

filter resonance

low

high

sway / swell cycles

fast

slow (8–32 bars)

Vocabulary for moving sound

Movement needs words a performer can say. Two sources give them:

  • Smalley’s spectromorphology names the basic motions of electroacoustic music: ascent and descent; oscillation (between two points); rotation around a centre; flying out from or in to a centre (centrifugence, centripetence); dilation and contraction; vortex. Each became a shape or an action in A³ Motion.

  • Rhythm cells. The tresillo (3+3+2 in eighths) is the cell EDM builds tension on before a drop; the son clave 3-2 has three strokes in bar one and two in bar two. A position that jumps on those sixteenths grooves in space.

One panel layout, every set

The hands should learn one panel, not one per set. A³ Motion’s six action pads keep the same meaning in every set:

left: more (open, up, faster)

right: less (close, down, calmer)

row 1

gentle more

gentle less

row 2

strong more

strong less

row 3

the sound effect (FX)

Cue into the next phase

“Left adds energy, right takes it away; top gentle, middle strong, bottom special” is the single most useful sentence for a first night, and it belongs in the quick start.

Sources

The full list is in sources.