# CCLED LED responds to incoming CC messages. ```cpp #include "pico/stdlib.h" #include "pico/cyw43_arch.h" #include using namespace cs; BluetoothMIDI_Interface midi; CCLED led { 13, {MIDI_CC::General_Purpose_Controller_1, Channel_1}, }; int main() { stdio_init_all(); if (cyw43_arch_init()) return 1; Control_Surface.begin(); while (true) { Control_Surface.loop(); sleep_ms(1); } } ```