Licences and credits

Music

All 64 recordings are by Kevin MacLeod (incompetech.com), licensed under Creative Commons Attribution 4.0. They were re-encoded at a lower bitrate to make the app smaller, and ten very quiet pieces (Reminiscing, Friday Morning, Touching Story, Clear Waters, Midsummer Sky, Luminous Rain, Water Lily, Starry, Two Together and Village Dawn) were made louder by a fixed amount, with no other processing. Nothing else was changed. Composers of classical and ragtime pieces are shown in brackets.

• "Canon in D Major" (Johann Pachelbel)
• "Dance of the Sugar Plum Fairy" (Pyotr Ilyich Tchaikovsky)
• "Jesu" (Johann Sebastian Bach)
• "Hall of the Mountain King" (Edvard Grieg)
• "Prelude in C - BWV 846" (Johann Sebastian Bach)
• "Cello Suite 1 in G - Prelude" (Johann Sebastian Bach)
• "Gymnopedie No 1" (Erik Satie)
• "Gymnopedie No 2" (Erik Satie)
• "Divertimento K131" (Wolfgang Amadeus Mozart)
• "Sheep May Safely Graze - BWV 208" (Johann Sebastian Bach)
• "Aquarium" (Camille Saint-Saëns)
• "Ranz des Vaches" (Gioachino Rossini (from the William Tell overture))
• "Evening"
• "Gymnopedie No. 3" (Erik Satie)
• "Divertissement - Pizzicato (from the ballet Sylvia)" (Léo Delibes)
• "Thaxted (Holst)" (Gustav Holst, arranged by Kevin MacLeod (the hymn tune from "Jupiter"))
• "Wagner Bridal Chorus - piano" (Richard Wagner, piano variation by Kevin MacLeod (from Lohengrin))
• "The Entertainer" (Scott Joplin)
• "Maple Leaf Rag" (Scott Joplin)
• "Frogs Legs Rag" (James Scott)
• "Avec Soin"
• "Clear Waters"
• "Continue Life"
• "Midsummer Sky"
• "Sapphire Isle"
• "Reminiscing"
• "Two Together"
• "Winter Chimes"
• "Water Droplets on the River"
• "Heartwarming"
• "Luminous Rain"
• "Starry"
• "Stoic Morning"
• "Simple Duet"
• "Friday Morning"
• "Water Lily"
• "Village Dawn"
• "Touching Story"
• "Midday Dance"
• "Morning"
• "The Forest and the Trees"
• "Windswept"
• "Cattails"
• "Enchanted Valley"
• "Enchanted Journey"
• "Somewhere Sunny (ver 2)"
• "Clear Air"
• "Ripples"
• "Cherry Blossom"
• "Finding Movement"
• "Errigal"
• "Ishikari Lore"
• "Guzheng City"
• "Shenyang"
• "Midnight Tale"
• "Carefree"
• "Monkeys Spinning Monkeys"
• "Teddy Bear Waltz"
• "Dreamy Flashback"
• "Music Box Theme"
• "Court of the Queen"
• "Plucky Daisy"
• "Glitter Blast"
• "Pennsylvania Rose"

3D models and sound effects

• Kenney (kenney.nl), Creative Commons Zero (CC0). 3D models from the Food Kit and Nature Kit, converted for the app; sound effects from the Interface Sounds and Impact Sounds packs, converted to MP3. The pitched notes in the music games and the "You did it!" sound are original.

Nature sounds

• "Waidachswald Oberschefflenz Abend 20250616 2005" by Evillan, from Wikimedia Commons, CC0. A 90-second excerpt with fades and level adjustment is used as forest ambience.

Typeface

• Fredoka by The Fredoka Project Authors, SIL Open Font Licence 1.1. Used in the app and for headings on this website.

Voices

Speech is made on the device by Piper voices (MIT licence), run by sherpa-onnx (Apache License 2.0), with pronunciation data from eSpeak NG (GNU General Public License, version 3 or later). The voice files are the sherpa-onnx conversions published at huggingface.co/csukuangfj.

Software

Mellowmoor is built with Flutter and open-source packages, each under its own licence. The app's built-in licence page lists them in full.