Lyrics Sync

A Slopsmith plugin that generates time-synced LRC lyrics files using Whisper forced alignment against isolated vocals stems.

How it works

1. Select a sloppak song that has split stems (vocals track required)
2. Paste or upload plain text lyrics
3. The plugin sends the vocals stem to your Slopsmith Demucs Server for Whisper forced alignment
4. Preview the timestamped result, then download as .lrc or save directly into the sloppak for playback display

Because sloppak songs already have an isolated vocals track from Demucs separation, alignment accuracy is significantly better than aligning against a full mix.

Features

• Line, word, and syllable granularity — choose the level of timing precision
• Language hint — optional language code to improve accuracy for non-English lyrics
• LRC export — standard [mm:ss.xx] line format compatible with any LRC player
• Save to song — writes synced lyrics into the sloppak manifest so they display during playback via the lyrics toggle
• Preview panel — review timestamps before exporting

Requirements

• A running Slopsmith Demucs Server with the /align endpoint (v2+)
• The demucs server URL must be configured in Slopsmith settings
• Sloppak songs with split stems (use the Sloppak Converter plugin with Demucs splitting enabled)

Install

cd plugins
git clone https://github.com/got-feedback/feedback-plugin-lyrics-sync.git lyrics_sync

Restart Slopsmith and the plugin will appear in the Plugins dropdown.