| name | strudel-transitions |
| description | The compositional craft of making sections FLOW — transitions, ramps, gain-staging, and the dynamic arc across a track's section files (tracks/<id>/NN.strudel). The player crossfades at the cycle boundary technically, but whether the seam feels musical is something you have to write. Use when building or arranging a section arc, when a track feels flat / same-volume throughout, when a section change feels jarring, or when the user mentions transitions, ramps, gain diffs, risers, fills, drops, or "the arc." |
The player auto-advances section files and crossfades at the next cycle boundary — that's the technical swap, handled for you. Whether the seam feels musical is a compositional act you have to write. A track's arc lives or dies at its seams.
Gain-stage the whole arc (the dynamic curve)
A track is a shape, not a flat wall of sound. Sketch the curve before writing sections:
- intro — genuinely quiet (the Wise/Kiasmos near-silence; low summed gain)
- build — rising, section by section
- peak / payoff — loudest, densest
- outro — receding back down
Each section's summed level should sit on that curve. The #1 arc-killer: every section mixed to the same loudness — then the "peak" doesn't feel like one, because nothing was ever quieter. Pull the intro and any breakdown genuinely down (cut voices, drop gains) so the peak has somewhere to arrive from. Aim for real dynamic range (Kiasmos hits 100×+ silence→peak).
Match the level at the seam — or break it on purpose
Adjacent sections shouldn't jump in loudness unless you mean it:
- Smooth build → the next section starts near where the last ended, then adds. Carry the bed (pad/bass) across at the same gain; the new layer is the only new energy.
- Drop → the jump is the point. Build, a beat of breakdown, then the next section slams in (Kiasmos: the kick enters — it doesn't fade up). Contrast = impact.
Ramps — lean into the boundary
Automate something toward the seam so the section reaches for the next. Time the slow(N) to the section's @cycles so it resolves exactly at the swap:
.lpf(sine.range(400, 4000).slow(8))
.gain(saw.range(0.2, 0.5).slow(8))
.delayfeedback(sine.range(0.2, 0.7).slow(16))
Bridging elements (the connective tissue)
A one-bar gesture in the last bar of a section, landing on the downbeat of the next:
- Riser —
s("white").hpf(saw.range(200, 6000).slow(4)).gain(0.2) sweeping up into a drop.
- Reverse-cymbal swell —
s("gm_reverse_cymbal") is built for exactly this: the suck-in to the downbeat.
- Impact —
s("gm_orchestra_hit"), or a big bd + reverb on beat 1 of the new section.
- Drum fill — a Travis-Barker tom fill IS a transition:
s("<~ ~ ~ [ht ht mt lt]>/4") drops the fill in the bar before the change, turning the corner.
- Held carryover — let a pad or a long reverb tail bleed across the seam so the two sections share air; nothing feels cut.
The "don't force it" rule (learned on Drift)
If a transition keeps feeling awkward — most often drums kicking in or out at the seam — stop forcing it. A jarring transition is worse than none. Two fixes that always work:
- Keep the element constant across the seam. Don't start/stop the kit at a section change; let it run through and change other layers around it.
- Go without. If drums make every seam awkward, the track may simply want to be drumless (Dawn, Drift) — the layering of melodic voices carries the motion, with no beat to fumble.
The seam should feel inevitable, not engineered. If you're fighting it, change the plan — not just the volume.
Land it on the boundary
The player crossfades at the cycle boundary, so design every fill / riser / ramp to resolve exactly there. // @cycles N sets the section length ([[strudel-conduct]]) — put the fill in bar N, the impact on bar 1 of the next.
See also: [[strudel-conduct]] (the macro arc + @cycles timing), [[strudel-compose]] (writing the section itself), [[strudel-effects]] (filters / reverb / delay for the ramps), [[strudel-sample-library]] (gm_reverse_cymbal, gm_orchestra_hit, noise risers).
