Show HN: Contrapunk – Real-time counterpoint harmony from guitar input, in Rust (contrapunk.com)

Contrapunk is a Rust-based real-time MIDI and guitar-to-MIDI app that generates counterpoint harmony from detected pitch, using configurable modes (e.g., Palestrina, Bach, Jazz) and multiple scale options. It emphasizes low latency (sub-10ms) and deterministic voicing, with automated voice-leading rules such as rejecting parallel fifths and preventing voice crossing. The project also offers browser and native desktop support via WebAssembly/Tauri and is MIT licensed.