Prompt
A 20-second seamless loop of intimate fingerstyle steel-string acoustic guitar in D major at 96 BPM: eight bars of alternating-thumb picking, played in standard tuning with every note on a real string and fret. A lightly palm-muted thumb keeps a steady boom-chick bass on the low strings (with a thumb-over F# and a walking turnaround), the fingers pinch an original melody on the top strings, and open strings ring on as drones between the moving notes. Bars 1-4 state the theme in first position over D, Bm7, G and Asus4-A; bars 5-8 answer it up the neck over open-string bass, peak on a hammered-on high E in bar 6, drop back to first position with a pull-off, and turn around on A7sus4-A7 while the thumb walks B-C# straight back into the opening D. A light thumb knock on the top marks beats 2 and 4, and two soft wound-string squeaks give away the position shifts. Each string is a two-polarisation digital waveguide (loop low-pass, stiffness allpasses, fractional tuning) plucked with a shaped flesh-and-nail impulse at a varying point along the string, every string can only sound one note at a time, and all of them drive one modelled guitar body (air and top-plate resonances near 100 and 200 Hz plus a dense wooden mode field), picked up by a close stereo pair in a small warm room. Rendered circularly so the last sample flows back into the first.
Metrics
- Integrated LUFS
- -14.01 LUFS
- True peak
- -1.3 dBTP
- Length
- 20s · 960,000 samples @ 48000 Hz
- Target master
- -14 LUFS · peak ≤ -1 dBTP
- Checks
- Passed
Spectrogram

Generated code
Loading…Timing & cues
96 BPM · 30 fps · seed 96203
- Frame 0: loop start
Steel-string fingerstyle: each string is a two-polarisation waveguide (loss low-pass, stiffness allpasses, fractional tuning) plucked by a flesh/nail impulse combed at the pluck point; one note per string, chord-shape and position-shift damping, hammer-ons/pull-offs, palm-muted alternating thumb (lifted in bars 5-6 so the open bass drones). All strings drive one modal body (air ~102 Hz, top ~198 Hz + dense wood modes) into a near-coincident close pair and a small warm room; light thumb knocks on 2 and 4, two soft wound-string squeaks at the position shifts. Rendered as three identical cycles (wrap-mode limiter/holds), middle kept; the seam sits on a zero crossing 0.12 ms ahead of the loop-top pinch. Verified with --loop.
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