~關於鋼琴的問題~關於鋼琴的問題~

1) 鋼琴獨奏曲的種類 (3種) ???
有很多(可選以下其中3項):小奏鳴曲,奏鳴曲,前奏曲,賦格曲,小步舞曲,夜曲,Scherzo,波蘭舞曲,即興曲................
2) 預置鋼琴(Prepared Piaon) :

i) 始創者:John Cage

ii) 出現的樂期:20th century

iii) 發聲原理:
A prepared piano is a piano that has had its sound altered by placing objects (preparations) between or on the strings or on the hammers or dampers.
The idea of altering an instrument's timbre through the use of external objects has been applied to instruments other than the piano.