Accordion. The song Deer in the Black Forest is played on the accordion. Deer in the Black Forest is a song sung by singer Qian Hongxun Deer, released on 202 1 1 65438+5, and it is a pure accordion music work. Accordion is a keyboard instrument that can be solo and accompanied. It can play a single-part beautiful melody, multi-part music and rich harmony with both hands like a piano.