About Songbench
A browser-local practice track studio for teachers, singers and anyone learning a part by ear.
Why it exists
Most online audio tools make you upload a file before you can do anything, then put a paywall or a watermark on the result. Songbench takes the opposite route: one HTML page, one file you already own, and as many practice versions as you need - all rendered on your own device.
What you can do
- Slow down or speed up 50-125 percent while the original pitch stays put
- Transpose -12 to +12 semitones on export
- Loop a difficult section with draggable A-B points
- Attenuate a center-panned lead vocal, add generated convolution reverb, warm bass or 8D pan
- Export 16-bit WAV, batch several versions, and share a practice sheet by link
How it is built
One self-contained single-page application. decodeAudioData reads the file, OfflineAudioContext renders the processing chain and a small encoder writes the WAV. There is no upload endpoint, no account system and no server-side inference. The interface is available in six languages.
Rights
We do not host a song catalogue, supply lyrics or download audio from video platforms. You supply the audio and you hold the rights to it. See the privacy policy for what data is and is not handled.