Stem:Ample Feature · Loop Seed Generator
Give your track a spine.
Build recurring musical phrases with tempo, key, notes, and repetition rules — then export straight to your music platform.
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").
BPM Range Legend
| BPM | Label | Feel |
|---|---|---|
| 40–59 | Deep Ballad | Swaying, still, prayer-like |
| 60–74 | Slow Jam | Intimate, bedroom, candlelit |
| 75–89 | Groove | Head-nod, laid-back, cruising |
| 90–104 | Mid-Tempo | Walking pace, bounce, confident |
| 105–119 | Upbeat | Energy without urgency, warm |
| 120–134 | Dance | Club-ready, four-on-the-floor |
| 135–149 | High Energy | Driving, intense, half-time trap |
| 150–169 | Driving | Relentless, fast, adrenaline |
| 170–200+ | Explosive | Maximum 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.
[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)
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