Credits & Attributions

Open-source libraries, audio samples, fonts, and external APIs used in LandChords.

LandChords is built on excellent open-source work. This page lists every third-party dependency bundled with or used by the application, along with authors and licenses.

Audio samples

Salamander Grand Piano

Piano samples — instrument: acoustic grand piano
Author: Alexander Holm
License: Creative Commons Attribution 3.0 Unported (CC BY 3.0)
Source: freepats.zenvoid.org

FluidR3_GM soundfont (via midi-js-soundfonts)

Acoustic Guitar, Ukulele (nylon guitar), Electric Guitar (clean), Muted Electric Guitar, Jazz Guitar, Bass, Rhodes, Wurlitzer, Organ, Vibraphone, Strings, Harp, Accordion, Warm Pad, Banjo. Used unmodified.
Author: Frank Wen (soundfont); rendered to MP3 by Benjamin Gleitzman
License: Creative Commons Attribution 3.0 (CC BY 3.0)
Source: github.com/gleitz/midi-js-soundfonts

Musyng Kite soundfont (via midi-js-soundfonts)

Flute, Lead Synth, Bells, Whistle. Used unmodified.
Author: Rendered to MP3 by Benjamin Gleitzman
License: Creative Commons Attribution-ShareAlike 3.0 (CC BY-SA 3.0)
Source: github.com/gleitz/midi-js-soundfonts

Drum sounds

Kick, Snare, Hi-hat, Open Hat, Clap, Tom — fully synthesized in-browser via Tone.js MembraneSynth, NoiseSynth, and MetalSynth. No sampled audio.

JavaScript libraries

React

UI component framework
Author: Meta Platforms, Inc. and contributors
License: MIT
Source: react.dev

React Router

Client-side routing
Author: Remix Software, Inc.
License: MIT
Source: reactrouter.com

Tone.js

Web Audio scheduling, synthesis, and sampler engine
Author: Yotam Mann and contributors
License: MIT
Source: tonejs.github.io

Tonal

Music theory — scales, chords, intervals, and key analysis
Author: Alejandro García and contributors
License: MIT
Source: github.com/tonaljs/tonal

@tombatossals/chords-db

Guitar chord fingering database — fretboard diagrams in the chord palette
Author: David Rubert
License: MIT
Source: github.com/tombatossals/chords-db

react-markdown

Markdown rendering for blog posts
Author: Espen Hovlandsdal and contributors
License: MIT
Source: github.com/remarkjs/react-markdown

remark-gfm

GitHub Flavored Markdown plugin (tables, strikethrough, task lists)
Author: Titus Wormer and contributors
License: MIT
Source: github.com/remarkjs/remark-gfm

lamejs (@breezystack/lamejs)

In-browser MP3 encoding for audio export
Author: Alex Zhukov (original lamejs) and contributors
License: LGPL-3.0
Source: github.com/gideonstele/lamejs

@marsidev/react-turnstile

Cloudflare Turnstile bot-protection widget for signup
Author: Marsi Dev
License: MIT
Source: github.com/marsidev/react-turnstile

@supabase/supabase-js

Client library for authentication, database, and file storage
Author: Supabase, Inc.
License: MIT
Source: supabase.com

Workbox

Service worker and offline caching (shipped as part of the PWA)
Author: Google LLC
License: MIT
Source: developer.chrome.com/docs/workbox

Lucide

Interface icons (lucide-react)
Author: Lucide Icons and contributors
License: ISC
Source: github.com/lucide-icons/lucide

posthog-js

Product analytics client (events only; no session recording)
Author: PostHog Inc., with portions by Mixpanel, Inc.
License: Apache-2.0 and MIT
Source: github.com/PostHog/posthog-js

Android app libraries

Capacitor

Native Android runtime and official plugins (App, Browser, Filesystem, Local Notifications, Push Notifications, Share)
Author: Drifty Co. (Ionic) and contributors
License: MIT
Source: github.com/ionic-team/capacitor

@capgo/capacitor-social-login

Native Google sign-in
Author: Capgo and contributors
License: Mozilla Public License 2.0 (MPL-2.0)
Source: github.com/Cap-go/capacitor-social-login

@revenuecat/purchases-capacitor

In-app subscription purchases through Google Play
Author: RevenueCat, Inc.
License: MIT
Source: github.com/RevenueCat/purchases-capacitor

Fonts

Inter

Primary UI typeface
Author: Rasmus Andersson
License: SIL Open Font License 1.1
Source: rsms.me/inter

JetBrains Mono

Monospace typeface for labels, metadata, and chord notation
Author: JetBrains
License: SIL Open Font License 1.1
Source: jetbrains.com/lp/mono

Fraunces

Serif display typeface for lyrics and editorial headings
Author: Undercase Type (Phaedra Charles and Flavia Zimbardi)
License: SIL Open Font License 1.1
Source: github.com/undercasetype/Fraunces

External services

Cloudflare Turnstile

Privacy-preserving bot detection on the signup form
Author: Cloudflare, Inc.
Source: developers.cloudflare.com/turnstile