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Tested recipe · Ambient / wellness

Sleep Bed (Long-form Seed)

A 30-second ambient seed texture that survives 20x time-stretching for sleep and meditation beds.

Model
Suno v5.5
Date tested
2026-06-30
Tested by
Cato Lindqvist
Usable rate
10 of 12 (83%)

The batch, run by run

Filled squares are usable takes. Reliability 5/5.

The exact prompt

[Ambient, 60 BPM, C major] Warm slowly-breathing pad, no rhythm, no melody, single sustained chord that barely moves, soft tape hiss, extremely gentle, designed to loop seamlessly

Exclusions (load-bearing)

drums, arpeggio, melody line, chord changes, bright bells, nature samples

The evidence

Real Suno generations, matched to this recipe's genre and tempo. Each one links to its source.

keeper

Sleep bed, take 3

60 BPM · C maj · 3:39

Take 3 of 12 · Cleanest loop point of the batch.

keeper

Hibernal

58 BPM · D dor · 6:09

Released result · Two stretched seeds layered, delivered as a 40-minute commission.

Known failure modes

  • A faint hat pattern appears when 'gentle' is omitted
  • Chord resolves upward at the loop point, breaking the stretch

The repair prompt

Same texture but remove any rhythmic element completely and hold the exact same chord from first second to last