Transpose any track's pitch and playback speed in real time with no quality loss. Shift a song into your range, or match a sample's key.
The pitch changer transposes a track up or down in real time, either as a musical key change or as a straight playback-speed adjustment. Pitch and tempo are linked by default — the way a record slows down when you drag the platter — but they can be decoupled, so you can move the key without touching the timing, or change speed while the pitch stays put.
Singers use it to shift a song into their range, guitarists to match a track tuned a half-step down, and producers to line up a sample with a project's key. Push a transposition far enough and you'll hear artifacts, especially on vocals, where the formants that make a voice sound human start to stretch with the pitch — a couple of semitones is usually transparent, an octave is not. How to pitch shift without ruining vocals covers where the line sits, and how pitch, speed and duration relate explains why they were ever linked.
To transpose pitch without quality loss, Vocal Cut processes your audio internally at high precision throughout, which helps preserve dynamic range and avoid the artifacts that lower-quality tools can introduce. For the most natural-sounding results, keep shifts within about ±3-4 semitones — larger jumps can start to thin out or distort a vocal, a limitation of pitch-shifting in general, not just ours. Worth knowing: shifting the pitch also changes the track's duration slightly, similar to speeding up or slowing down a record, so the output won't be exactly the same length as your original file. This is handy for a quick key change to practice a song in a more comfortable range, or to test how a cover might sound transposed before committing to a full re-record.
The speed control changes how fast the track plays back, similar to fast-forwarding or slowing down a recording — you can hear this update live as you adjust the slider during preview. The pitch control shifts the key up or down in semitone steps to transpose the track without re-singing or re-recording anything, though the pitch change itself only becomes audible once you generate and download the processed file, not during live preview. Because both settings are combined in the final output, shifting the pitch will also slightly change the track's duration, similar to speeding up or slowing down a record. If you only want to change speed without touching pitch at all, the speed slider on its own does exactly that, both in preview and in the downloaded file.
Yes, 100% private — all transpositions run purely in your browser, using your device's hardware to speed things up when available. Nothing about your file, including its content or metadata, is ever transmitted anywhere, so the same privacy guarantee applies whether you're processing a 10-second clip or a full-length track. This makes it a solid choice for reviewing unreleased demos, private vocal takes, or anything else you'd rather keep off a third-party server entirely. Processing time depends on your own device rather than a shared queue, so a larger file simply takes a bit longer locally instead of waiting behind other people's jobs.