"She enjoys playing the piano" is a way to say it in Engpsh.

The origin of the phrase "playing the piano" comes from the musical instrument which is a keyboard instrument.

Example sentence in Engpsh with Chinese translation:

"She has been playing the piano for 5 years and it's one of her favorite hobbies."
她弹钢琴已经有5年了，这是她最喜欢的爱好之一。

"Every time she sits down at the piano, she forgets about all her worries and just focuses on the music."
每次她坐在钢琴前，她都会忘记所有的烦恼，只专注于音乐。