RainbowDings - sound credits

Instrument samples: Versilian Community Sample Library (VCSL), CC0 1.0 (public domain dedication)
  https://github.com/sgossner/VCSL  (Concert Harp, Glockenspiel, Xylophone, Marimba, Conga/Tumba/Quinto, Bongos, Snare, Tom, Bass drum, Cajon and Tambourine drums, Yamaha Upright Piano, Baroque Soprano Recorder, Vibraphone with soft mallets)
Animal sounds: individual Freesound recordings, each checked on its own Freesound page as CC0 1.0
(public domain dedication). Trimmed, normalised and converted to mp3.
  Cow:    "Moo 1 - Moo Moo the Cow" by manofham (Freesound 700378), CC0, trimmed, level-matched and faded.  https://freesound.org/people/manofham/sounds/700378/
  Cat:    "Kitten Meowing.wav" by lolamadeus   https://freesound.org/people/lolamadeus/sounds/196251/
  Sheep:  "Lamb and Mother" by swiftoid   https://freesound.org/people/swiftoid/sounds/182509/
  Goat:   "goat.aif" by beskhu (Freesound 273911), CC0, trimmed, level-matched and shortened.  https://freesound.org/people/beskhu/sounds/273911/
  Dog:    "Puppy Bark" by AntumDeluge   https://freesound.org/people/AntumDeluge/sounds/583142/
  Horse:  "Horse_Whinny.wav" by foxen10   https://freesound.org/people/foxen10/sounds/149024/
  Pig:    "oink.wav" by krzpia   https://freesound.org/people/krzpia/sounds/510974/
  Sitar:  "Sitar 01.wav" by zgump   https://freesound.org/people/zgump/sounds/87435/
  Birds:  "Super Cute Bird Tweets - Short Chirp SFX" by LilMati (one chirp)   https://freesound.org/people/LilMati/sounds/714572/
  Chicks: "Chicks very young.wav" by AGFX   https://freesound.org/people/AGFX/sounds/43380/
Songs: traditional / public domain melodies.
MP3 encoding in the browser: lamejs (LAME MP3 encoder, LGPL-3.0), included as lame.min.js with its licence text in lame-LICENSE.txt. https://github.com/zhuker/lamejs
Site icon: original RainbowDings artwork (rainbow and note), made for this app.
Sound clips are level-matched and their long ringing tails shortened for RainbowDings (processed from the clips credited above).