这位钢琴家能不借助乐谱，凭记忆演奏出大部分曲调。

The pianist can ___play most tunes ___by ___ear without needing sheet music.

我从没正规学过识谱；弹吉他全凭耳朵听来演奏。

I never learned to read music properly; I just ___play everything on the guitar ___by ___ear.

能够凭记忆演奏如此复杂的小提琴曲目，是一项令人印象深刻的技能。

It's an impressive skill to be able to ___play such a complex violin piece ___by ___ear.