Heumi

Endless work songs, full of 흥

Focus music your browser composes and synthesizes note by note, with no recordings and no existing songs. When one track ends, a new one begins. Keep a track’s number and you can hear the exact same song again anytime.

Heumi comes from 흥 (heung), the Korean word for the lift in spirits that work songs bring.

Recorded samples 0 Existing songs used 0 Engine Web Audio
L-00000

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Recently played

    Nothing yet. Track numbers will appear here as you listen.

    How Heumi works

    Your browser composes the music
    When you press play, Heumi picks a key, chord progression, rhythm and melody on the spot and synthesizes every note with Web Audio. No recorded samples, no existing songs.
    It never runs out
    Each track lasts two to three minutes, and a fresh one follows right after. Nothing repeats, so it stays easy to listen to for hours.
    Keep a track by its number
    Every track gets a number like L-48213. Enter it anytime to rebuild the exact same track. You can also keep favorites and share a track as a link.
    Music that follows your focus session
    Start the timer and the music moves with your session. It opens lightly, settles into a flow stretch, and thins out over the last two minutes, so you can tell a break is coming without checking the clock.
    Work songs on Korean rhythms
    Jangdan mode sets synthesized voices modeled on the gayageum and daegeum over gutgeori and jajinmori rhythms. The ambience layers (rain, campfire, waves, brown noise) are synthesized on the spot too.
    Ready for streams and videos
    Download the current track as a WAV file, or run Heumi directly in OBS as a browser source.

    Frequently asked questions

    Can I listen without worrying about copyright?

    Every sound in Heumi is synthesized live in your browser, with no existing songs or recorded samples, so listen as much as you like while you work.

    Can I use it in streams or videos?

    Yes. You can use Heumi tracks as background music in streams, YouTube videos and podcasts, including monetized ones. Please credit “Music: Heumi (heumi.fun)” with the track number in the description or on screen. Supporters may skip the credit. Reselling tracks as music or registering them with Content ID is not allowed.

    Is it free? Do I need an account?

    It’s free, with no sign-up and nothing to install. Just press play in your browser. Heumi runs on support from its listeners.

    Which mood should I choose?

    Lo-fi suits light tasks like writing docs or clearing your inbox. Ambient, with no drums, suits deep thinking like planning and design. Code Pulse suits fast, focused work like coding. Jangdan suits repetitive work that needs a lift.

    Does it keep playing in a background tab?

    Yes, in desktop browsers it keeps playing when you switch tabs. On phones, the browser may stop the sound when the screen locks. You can add Heumi to your home screen or install it as an app, and after the first visit it plays without a connection.

    How do I use a track number?

    When you hear a track you like, copy its number. Paste it into “Play by track number” to hear the same key, chords and melody again.

    HEUMI 흥 · heumi.fun
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