Stem:Ample Feature

Loop Seed Generator

Build recurring musical phrases that give your track a spine

AI Suggest — Fill the rest of the seed

You pick the loop type and tempo below — AI fills note count, instrument, rhythm feel, drum kit, texture, evolution, and technique to match. Optional vibe hint (e.g. "moody UK garage at dusk").

AI today0 / 3
Interactive Seed BuilderGenerates AI generator prompt
Loop typePick one — the fields below adapt
Instrument
Note count
Rhythm feel
Repetition rule
Tempo40 – 200 BPM
70
BPM
Slow Jam6074 BPM
Intimate, bedroom, candlelit
Think: Slow R&B, smoky ballads
BPM Range Legend
BPMLabelFeel
4059Deep BalladSwaying, still, prayer-like
6074Slow JamIntimate, bedroom, candlelit
7589GrooveHead-nod, laid-back, cruising
90104Mid-TempoWalking pace, bounce, confident
105119UpbeatEnergy without urgency, warm
120134DanceClub-ready, four-on-the-floor
135149High EnergyDriving, intense, half-time trap
150169DrivingRelentless, fast, adrenaline
170200+ExplosiveMaximum intensity, breakneck

Half-time note: trap & drill beats are often set to 135–145 BPM in the DAW, but the kick/snare play at half speed — a 140 BPM trap beat feels like 70 BPM. Enter the BPM shown in your DAW.

Musical DNA — optional0/4 set

Layer compositional anchors onto the seed: tonal center, chord motion, bass personality, and a second voice. All optional — empty fields are simply omitted from the export.

Key & Mode
Chord Motion
Bass Behavior
Counter-Melody
Note Sequence4 notes
D1
F2
A3
C4
Generated AI generator instruction
[Constraint]: A recurring phrase of 4 notes played on synthetic marimba. The rhythm is even, equally spaced. Returns every 8 bars, unchanged.

[Tempo]: 70 BPM — Slow Jam (Intimate, bedroom, candlelit)
Where it goes
Paste this block into your Suno / Udio prompt on its own line as [Constraint]: …, alongside your session export. Full assembled prompt is on Step 4.
Step 1 of 3 — Build a seed

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