1. piano keyboard的解释
1. People saw Cage's friend David Tudor sit at the piano and mark the beginning of the piece by closing the keyboard lid.
2. piano keyboard的翻译
2. The keyboard talent says that Beethoven is one of his favorite composers and the Fourth Piano Concerto is his favorite concerto.
3. His first birthday present was a toy piano and he started to play electronic keyboard when he was just 2 years old.