LEGO Set - 21323 - Ideas (CUUSOO) - Grand Piano

LEGO 21323 Grand Piano is an Ideas set released in 2020, containing 3,662 pieces. It builds a concert grand piano with a working keyboard, moving hammers and dampers, an opening lid and fallboard, and an adjustable bench. The model integrates with a dedicated LEGO app; the keys and internal mechanism interface with a smart device to play music electronically rather than producing acoustic sound. It is based on SleepyCow’s Playable LEGO Piano project from LEGO Ideas and was the first Ideas set marked 18+.