# Key Changer

> Pitch changer for website audio in desktop Chrome

- Website: https://keychanger.app
- AZN8 listing: https://azn8.com/listing/key-changer
- Pricing: Currently free in early access · Free
- Categories: [Other](https://azn8.com/category/other)
- Listed: 2026-11-01
- Updated: 2026-11-01
- JSON: https://azn8.com/api/v1/listings/key-changer

## About

I built Key Changer, a pitch shifter for audio playing on supported websites in desktop Chrome. Singers can try a practice track in a more comfortable key, and musicians can shift recordings for play-along practice while tempo stays unchanged. It works beyond YouTube, including Spotify Web and SoundCloud. Pitch moves from -12 to +12 semitones, with -50 to +50 cents of fine tuning. The optional Keep vocals natural setting helps preserve vocal timbre. It runs on my proprietary WebAssembly engine and is currently free in early access.

## Features

- Shift audio from -12 to +12 semitones
- Fine tune from -50 to +50 cents
- Keep playback tempo unchanged
- Optional Keep vocals natural setting helps preserve timbre

[Visit website](https://keychanger.app)