Pianist's flourish

TRILL

This rapid alternation between two adjacent notes often adds ornamentation to a melody, especially in Baroque or Classical music. Think of a bird’s quick, repeating call on the keys.

A "flourish" in piano playing often refers to a rapid, decorative note pattern that adds style to a piece. The term "trill" fits perfectly—it’s a quick alternation between two adjacent notes, like a shimmering musical embellishment. The clue plays on the idea of a pianist showing off with a flashy technique, and "trill" is the standard name for that kind of ornamental flourish.