Sing along
Upload the original song (with vocals), an instrumental or both. The app finds the key, tempo and original notes and shows whether you hit them. You can listen to the original voice or remove it with one button.
My songs
stored only in this browserNothing here yet. Upload your first song above or try the demo.
How to sing over a backing track and see your notes
- Upload the original song, an instrumental or both. The original gives the melody, key and tempo; the singer's voice is removed with the "Remove vocals" button.
- Press Play and sing: you see the original notes and your pitch line. Every note gets a grade, and combos raise the score multiplier.
- Loop a hard passage and shift the key by ±6 semitones — the backing track is rebuilt and the tempo stays the same.
- "Record a take" saves your singing and opens a report: where you hit the notes, where you miss and what to practise.
Singing a song written for another voice?
Any octave counts: if you sing an octave below the original, the notes on screen move to your voice. Small misses still count for fewer points, and your pitch line adjusts to your reaction delay automatically.
Frequently asked questions
How do I remove vocals from a song online?
Upload the song as the original — the voice is subtracted right in your browser, and the "Remove vocals" button switches between the original and the instrumental.
Can I sing karaoke with scoring for free?
Yes, without sign-up: upload any song from your device and sing with every note graded.
Do I need headphones?
Preferably — otherwise the music leaks into the microphone. Without headphones the original vocals are muted automatically while you record.