Play music from memorywithout having seen it printed

• 凭记忆；不看乐谱

Play music from memorywithout having seen it printed的用法和样例：

例句

1. She said the whole poem from memory.
   她凭记忆说出了整首诗。
2. Speaking from memory, I think it was ten years ago.
   凭记忆讲，那是十年前的事了。
3. She can play the most difficult piano music by ear.
   她能不看乐谱，光凭听觉记忆弹奏最难的钢琴曲。