[tickle] the ivories

to play the piano, typically in a skillful or enjoyable manner

The idiom "tickle the ivories" originates from the fact that piano keys are often made of ivory, and when playing the piano, the pianist's fingers "tickle" or gently touch the ivory keys. This expression is a playful and colloquial way to refer to playing the piano, often with a sense of enjoyment or skill.

My grandfather loves playing the piano; he tickles the ivories whenever he can.
At the jazz club, the pianist took the stage and began to tickle the ivories, captivating the audience with his improvisation.
As a child, he showed a natural talent for music and could tickle the ivories like a seasoned pianist.
She loves to sit at the grand piano and tickle the ivories, creating beautiful melodies.
After a long day at work, she finds solace in her piano, spending hours tickling the ivories to unwind and relax.