htrk — A Modern Music Tracker

htrk is a module music tracker for composing and playing back module files in classic tracker formats (IT, XM, S3M, MOD). Built with Rust, egui/eframe, and cpal.

Quick Start

• F1 — Keyboard shortcuts help
• F5 — Play from start
• F8 — Stop
• F10 — Settings
• Qwerty keys — Enter notes on the Note column (also plays audio preview)

See docs/ for full design documentation.

Building

cargo build --release

Key Features

• Pattern-based tracker workflow with mouse + keyboard editing
• Format support: IT, XM, S3M, MOD, native HTK/HTI
• Audio preview on qwerty keyboard note entry
• Themeable UI (Dark Modern, Dark Retro, Light, Amber Terminal, Matrix Green, etc.)
• Sample editor, instrument editor with envelope support
• WAV export
• Configurable interpolation (Nearest/Linear/Cubic) and limiter (HardClip/SoftKnee)
• Configurable auto-backup