1. charge via usb-c (allow full charge first time)
2. flip power switch up to turn on
3. turn volume knob to hear sound
4. press keyboard keys to play

main modes (same as original):
- [synth]: synthesizers
- [drum]: drum machines
- [tape]: 4-track recorder
- [mixer]: mix and effects

new: 32-bit stereo tape, 24hr battery, multiple tapes