Credits and licences

Brainlag is built on work that other people share. These are the pieces we use, who made them, and the licence each comes with.

Music

• Salamander Grand Piano V3 by Alexander Holm

  The piano you hear in the music tools and lessons (17 notes, from the MP3 versions by the Tone.js project).

  Licence: CC BY 3.0

• Bravura by Steinberg Media Technologies

  The music symbols on staves.

  Licence: SIL Open Font License 1.1

• Academico by Steinberg Media Technologies

  The text set with music notation.

  Licence: SIL Open Font License 1.1

• VexFlow 5 by Mohit Cheppudira and contributors

  Draws the staves and notes.

  Licence: MIT

Fonts

• Fredoka by Milena Brandão

  Headings.

  Licence: SIL Open Font License 1.1

• Onest by The Onest Project Authors

  All other text, here and on Brainlag Code.

  Licence: SIL Open Font License 1.1

• Atkinson Hyperlegible by Braille Institute of America

  The captions on lesson videos.

  Licence: SIL Open Font License 1.1

• JetBrains Mono by The JetBrains Mono Project Authors

  Code on Brainlag Code.

  Licence: SIL Open Font License 1.1

• DejaVu Sans by The DejaVu fonts team

  Maths and music signs in printable packs.

  Licence: Bitstream Vera licence

Sounds

Our sounds are made from recordings that are public domain (CC0): packs by Kenney, and Freesound recordings, including VSCO 2 Community Edition samples by Sam Gossner and a kalimba by nemaavla. CC0 asks for no credit; we give it anyway. CC0 1.0

Code libraries

Brainlag Code uses CodeMirror 6 (MIT), the xcc C compiler (MIT), Pyodide (MPL 2.0), sql.js (MIT) and acorn (MIT). The quiz join code uses qrcode and dijkstrajs (MIT).