KaraokeQuiet — Automatically mute background sound when lyrics appear: Description: Detects when a page is displaying karaoke lyrics (or DOM has a class containing lyrics) and automatically lowers the beat/instrumental volume (if the player supports multiple tracks) — otherwise, simply lowers the total volume when lyrics start displaying. Features: rule-based detection, threshold timing, toggle on/off. Unique: automatically “highlights” the singing to focus; rarely seen integration for web karaoke. Difficulty: medium.
