"He is good at playing the piano" 可以用 "He excels in playing the piano" 来表达，来源于名词 "excel" 的动词形式 "excels"，意为 "擅长，突出"。

例句:

He excels in playing classical music on the piano.
他擅长弹钢琴演奏古典音乐。
She has a talent for playing the piano, and she excels in it.
她有弹钢琴的天赋，并且擅长。
His passion for music shows in how he excels in playing the piano.
他对音乐的热爱表现在他擅长弹钢琴上。