The phonetic symbols of the hand drum 12 tone can be written as C4, C#4/D4, D4, D#4/E4, E4, F4, F#4/G4, G4, G#4/A4, A4, A#4/B4 and B4. According to Baidu search music number official website, we know that the hand disc drum generally refers to the glove disc drum in percussion instruments, which usually has 12 sounds. The names and notes of each sound are as follows:1.c42.c # 4/d43.d44.d # 4/e45.e46.f47.f # 4/g48.g49.g # 4/a410.a4/kloc.