Show HN: Lrcmux, one lyrics API to rule them all

- Lrcmux is a new open-source API (application programming interface) that aggregates song lyrics from multiple sources into a single endpoint, so developers don't need to integrate with each lyrics provider separately. - Lyrics APIs have long been a headache for developers: most official providers require API keys, rate limits, and paid tiers, while many public scrapers are unreliable or break when websites change their layout. - The project is being shared on "Show HN" (Hacker News), a forum where developers showcase side projects and new tools. A "Show HN" post is often an early signal that a tool might gain adoption in the developer community. - This matters because anyone building a karaoke app, a music player plugin, a translation tool, or a lyrics display for live streaming currently has to cobble together multiple paid or fragile sources — Lrcmux aims to replace that with one free, maintained integration.