Hardware: Romu board, DAW (Ableton, Logic, etc.), USB-C cable for development. 2. Architecture: Use main Cortex-M33 core for USB management and app logic. Move raw MIDI data processing to RISC-V core via shared memory to reduce latency. 3. USB MIDI: Configure USB MIDI class in TinyUSB. Define input/output endpoints. 4. Inputs: Since Romu has no external GPIOs, simulate MIDI inputs via physical buttons (Note On/Off) and RGB LED for visual feedback. 5. Timing: Use RP2354A hardware timers for precise MIDI clock (16th notes). Sync cores via semaphores. 6. Code: Implement circular buffer for MIDI messages. Handle System Real-Time messages (Clock, Start, Stop). 7. Compile: Optimize code for speed (-O3). 8. Flashing: Flash final binary. 9. Verification: Plug in Romu. In DAW, select 'Romu MIDI' as input. Press buttons to send notes. Check latency with measurement tool. 10. Deepening: Add an 'Arpeggiator' mode managed by RISC-V core to generate complex patterns without overloading main core.