Played by ear from memory.

凭记忆弹的喔。

youdao

I didn't prepare a speech before I went, so I just played it by ear.

我去之前并没有准备要演讲，于是我便即兴演说。

youdao

This song was recorded in 2007 July. I played it by ear after hearing the song, so I don't have the sheets of it. Thank you for coming to visit my video.

这是周杰伦的“不能说的秘密” ， 在听完这首歌之后， 一时兴起在钢琴前弹奏并录了下来， 所以没有琴谱，…

youdao