About StemSplitterLab
A practice tool that stays on the device
StemSplitterLab splits a song into parts so you can practice one of them. You open a file you already have. The browser separates it into vocals, drums, bass, guitar, piano, and other, and you mute the part you do not want to play. You can also loop a phrase, slow it down without changing the pitch, or move the pitch without changing the speed.
The reason for building it this way is simple. Practicing a part should not mean sending the song to someone else’s computer. The work happens in the tab. Shortly after the stem splitter or a remover page opens, the browser downloads the separation file in the background and keeps it on the device. You can hide the corner ring. Data saver skips that download, and the text pages, including this one, do not start it. Later songs reuse the saved file.
Splitting, the practice tools, and exporting a mix or a single stem are free. There is no account. Songs you open are kept in a library in this browser until you delete them. Closing the laptop does not upload them on the way out.
What this site will not pretend
The default split is six stems: vocals, drums, bass, guitar, piano, and other. Guitar and piano are less clean than the others. Four stems is still a choice, and in that split a guitar shares Other with piano and keys. The guitar remover mutes the guitar stem, and Other as well, so a four-stem mix stays guitar-free too.
Tempo and key are estimates. A drumless mix can still contain cymbal wash. A vocal mute can leave a reverb tail. Those limits are written on the tool pages because they change how you practice, not because they are footnotes.
The credits page keeps the license notices. The how it works page explains the split. The privacy page says what stays local. If something on the site is wrong, the contact page has an email address.
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