The core of ToneBrowser is a DSP engine that fully separates time and pitch. Unlike regular players — where speed and pitch move together — ToneBrowser keeps tempo locked while letting you move the key up or down one semitone at a time.
The most common singing problem is "great song, wrong key." Slowing the backing track to match your voice warps timing; forcing yourself up a key damages your vocal cords. ToneBrowser solves this by treating pitch and speed as independent axes.
-12 to +12 semitones (two octaves, 25 steps). Default step is one semitone; an optional fine-tune slider lets you move in cents for singers who need a half-semitone nudge.
No file uploads, no conversion. ToneBrowser hooks directly into the playback stream of YouTube, SoundCloud, and most streaming sites. Slider moves are reflected in the audio within one buffer — no lag.
Change playback speed from 0.25x to 3.0x while keeping pitch locked. Perfect for instrument copying, language shadowing, and lecture bingeing. No chipmunk effect.
See all featuresThe most common key jump — -5 semitones for men covering female songs, +5 semitones for women covering male songs — available as one-tap presets.
See all featuresCancel center-channel vocals from any YouTube or stereo music track for an instant karaoke mix. Ideal for busking, streaming, and home parties.
See all featuresDownload ToneBrowser for free — change the key in 30 seconds.
