A single warm bell that rings out and settles, with a soft harmonic tail. Use it for saved forms, completed uploads, checkout confirmations and any moment that deserves a small, unembarrassing reward.
one bell, not a melody: sine G5 784 Hz, 900 ms harmonics: 2x at 22% level, 3x at 9% level (bell, not a bare sine) soft attack 6 ms so it swells instead of clicking envelope: 6 ms attack, 520 ms decay, plus a 330 ms fade-out from 0.62 s soft clip (tanh 1.2) for warmth