Added:
- Individual volume sliders for each track
- Swing/groove control (0-100%)
- Save/Load pattern to browser localStorage
- Improved timing system using setTimeout instead of setInterval for better swing accuracy

**Next Ideas:**
1. **Keyboard Shortcuts** - Map keys 1-5 to mute/unmute tracks, spacebar for play/pause, and arrow keys for pattern navigation
2. **Export to WAV** - Add recording functionality to capture your beat and download as an audio file

**Ready to level up your game? Pick one and let's build it!**