✦UltraStarPLAY / STATIC EDITION YOUR FILES STAY YOURS

OPEN-SOURCE KARAOKE. ZERO BACKEND.

Your voice.
Center stage.

Your songs. Your microphone. Your moment.
Turn this browser into a karaoke night.

UltraStar .txt + audio · folders & ZIPs · no uploads

PICK YOUR NEXT MOMENT

Your songbook 1

CHECK ONE, TWO

Soundcheck

Each singer needs a separate microphone input. Nothing is recorded or uploaded.

Player one

Not connected

Player two optional

Not connected

Positive timing adjustment moves microphone events earlier against the backing track. Start at 0; adjust by ear with the warm-up. This is manual calibration, not an automatic latency measurement.

YOUR SET

Ready to sing?

CHART WORKSHOP

Edit chart

Edit the original UltraStar text. Apply updates to this library, or export a UTF-8 .txt file. Your original disk files are never modified.

THAT WAS YOUR MOMENT

Nicely sung.

Your first karaoke night

1. Bring a song

Open a folder or ZIP containing an UltraStar .txt chart and its matching audio. Add cover art and a background video for the full experience. Browser-supported codecs only; a broken media file cannot be repaired by its extension.

2. Connect your voice

Open Soundcheck, allow microphone access, and sing a steady vowel. You should see your pitch and input level. Use headphones: speakers can leak the guide vocal into your microphone and inflate your score.

3. Follow the notes

Cyan and pink bars are target pitches. Your live pitch appears at the playhead. Golden notes count double. Freestyle lyrics are unscored. Rap notes score vocal activity rather than pitch. Another octave is allowed by default.

Practice, privacy & storage

Rehearsal, changing speed, or seeking marks the run unranked. Scores use this app's normalized 10,000-point system, not native UltraStar's exact scoring. Local imports never leave your browser. “Remember imports” stores copies in this browser; clearing site data removes them. Hosted catalog songs need an internet connection.

Open source, not an official release

This community browser reimplementation adapts UltraStar Play's MIT-licensed format handling. It does not include Unity, upstream artwork, commercial music, online multiplayer, phone-as-microphone pairing, or the full native song editor.