[play] by ear
1
to have the ability to play music by listening to it and recreating the sounds and melodies without relying on sheet music or written notation
The idiom "play by ear" has its origins in music. It means to perform a piece of music without relying on sheet music or formal notation. Instead, the musician plays based on what they hear and feel, often improvising as they go along. The idiom likely emerged from the world of jazz and other improvisational music genres. This expression is not limited to music and can be used more broadly to describe the act of handling a situation or making decisions as they come, without a predetermined plan or set of instructions. It implies adaptability and the ability to respond to changing circumstances.
- She usually plays the guitar by ear, rather than reading the music.
- He's a talented pianist who can play by ear and entertain any crowd.
- In improvisational theater, actors often have to play by ear and respond to audience suggestions.