Credits and Licenses

Credits & Licenses

Recognition, open-source attribution, and legal notices for the three SoundFonts powering your piano experience

🎹 FluidR3_GM 🎵 MusyngKite 🎧 FatBoy · General MIDI · .sf2

🎵 PlayPianoOnline.com uses three high-quality General MIDI SoundFonts: FluidR3_GM, MusyngKite, and FatBoy.
We believe in transparency and honoring the work of every open-source contributor.

CC BY 3.0 CC BY 3.0 Open Use

FluidR3_GM SoundFont · .sf2

Created by: Frank Wen and contributors

FluidR3_GM is a renowned, freely redistributable General MIDI SoundFont known for its rich, balanced instrument samples. It provides the acoustic piano, electric pianos, and the full range of MIDI instruments that make online piano playing expressive and realistic. This website loads audio samples pre-rendered from the FluidR3_GM collection.

📄 License & Attribution: FluidR3_GM is licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) .
🔊 Source repository: gleitz/midi-js-soundfonts · GitHub
🎼 Derived from: FluidR3_GM.sf2 (original SoundFont by Frank Wen et al.)
📌 In compliance with the CC BY license, we provide clear credit to the original authors and a link to the source distribution.

View on GitHub

📁 Maintainer: gleitz 📜 CC BY 3.0 🎹 GM-compatible

MusyngKite SoundFont · .sf2

Created by: Roberto Giammaria & the Musyng Kite project

MusyngKite is a high-quality General MIDI SoundFont derived from the Musyng Kite project. It is celebrated for its warm, natural instrument timbres and expressive dynamics, making it a favorite among web-based MIDI players. The piano samples are particularly noted for their clarity and rich harmonic content, delivering a premium playing experience.

📄 License & Attribution: MusyngKite is distributed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) .
🔊 Source repository: gleitz/midi-js-soundfonts · GitHub
🎼 Derived from: MusyngKite.sf2 (original SoundFont by Roberto Giammaria)
📌 In accordance with the CC BY license, we give proper credit to the original creator and provide a link to the source distribution.

View on GitHub

📁 Maintainer: gleitz 📜 CC BY 3.0 🎹 GM-compatible

FatBoy SoundFont · .sf2

Created by: FatBoy (FatBoy SoundFont project)

FatBoy is a popular General MIDI SoundFont known for its punchy, full-bodied sound and excellent instrument separation. It delivers a vibrant, polished character that works beautifully across a wide range of musical styles — from classical piano to pop and jazz. The piano samples are bright and articulate, offering a responsive and engaging playing feel.

📄 License & Attribution: FatBoy is distributed under open-source terms (typically free to use, modify, and redistribute with attribution). For specific licensing details, please refer to the MIDI.js soundfonts repository .
🔊 Source repository: gleitz/midi-js-soundfonts · GitHub
🎼 Derived from: FatBoy.sf2 (original SoundFont by FatBoy)
📌 We gratefully acknowledge the creator's contribution to the open-source audio community and provide this attribution as a sign of respect and compliance.

View on GitHub

📁 Maintainer: gleitz 📜 Open Use 🎹 GM-compatible

⚖️ License compliance & usage terms

All three SoundFonts — FluidR3_GM, MusyngKite, and FatBoy — are distributed under open-source licenses that allow free use, modification, and redistribution, provided that proper attribution is given to the original creators. PlayPianoOnline.com proudly fulfills these requirements by:

• Explicitly naming Frank Wen (FluidR3_GM), Roberto Giammaria (MusyngKite), and FatBoy (FatBoy SoundFont) as the creators.
• Providing direct links to the source repository: gleitz/midi-js-soundfonts where each SoundFont and its license are documented.
• Stating that the samples are derived from the respective original SoundFonts and linking to the CC BY 3.0 legal code where applicable.
• Ensuring that every audio sample played on this website is traceable back to these open-source projects.

🎧 About the audio samples on PlayPianoOnline

We use high-quality pre-rendered audio files (MP3 / OGG) generated from all three SoundFonts via the midi-js-soundfonts pipeline. This ensures realistic piano dynamics, sustain, and rich harmonic response. The samples are loaded on-demand, providing a seamless, low-latency playing experience directly in your browser — without any plugins.
Every note you play is powered by these open community resources.

💡 No proprietary samples are used. The sound is entirely generated from the FluidSynth FluidR3_GM, MusyngKite, and FatBoy sources, making the interactive piano possible while respecting free culture licensing.

📁 Repository maintainer: gleitz (MIDI.js soundfonts packaging) 🎹 General MIDI specification & sound design: original FluidR3, MusyngKite, and FatBoy teams

🔗 Additional sources: FluidR3_GM · MusyngKite · FatBoy 📜 Creative Commons Attribution 3.0: Full legal text

© PlayPianoOnline.com — Open web piano experience. All trademarks and SoundFonts are property of their respective owners.
This credits page ensures compliance with the CC BY 3.0 license for all FluidR3_GM and MusyngKite derived audio assets, and acknowledges the open-use nature of FatBoy.