# Sound credits

Ecou's recorded instruments come from free sample libraries. The samples were trimmed, converted to mono MP3 and reduced to a subset of notes; nothing else was changed.

| Instruments in Ecou | Source | Licence |
|---|---|---|
| Grand Piano | Splendid Grand Piano (AKAI Steinway samples), via [sfzinstruments](https://github.com/sfzinstruments) and [danigb/samples](https://github.com/danigb/samples) | Public domain |
| Stage Electric Piano | J. Learman, 1977 Rhodes Mark I Stage 73, via [sfzinstruments](https://github.com/sfzinstruments/jlearman.jRhodes3d) | CC0 1.0 |
| Upright Bass | D. Smolken, 1958 Otto Rubner double bass, via [sfzinstruments](https://github.com/sfzinstruments) | CC0 1.0 |
| Electric Guitar, Steel-string Acoustic, Nylon Guitar, Electric Bass, Violin, Cello, Flute, Clarinet, Saxophone, Trumpet, Trombone, French Horn, Tuba, Harp, Xylophone, Pipe Organ, Harmonium | [nbrosowsky/tonejs-instruments](https://github.com/nbrosowsky/tonejs-instruments) (compiled from public-domain and freely licensed recordings, see its sample-source-info.txt) | [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/) |
| Acoustic drum kit (`kit-acoustic/`) | Glen MacArthur, [AVL Drumkits 1.1](http://www.bandshed.net/avldrumkits/) (Black Pearl kit), via [oramics/sampled](https://github.com/oramics/sampled) | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) — the files in `kit-acoustic/` are shared under the same licence |

All other sounds in Ecou (synthesized instruments, drum machines, effects, amps and pedals) are generated by Ecou's own code.