IPA: //ˈpiːənɪst//
KK: /ˈpɪənɪst/
A person who plays the piano, especially in a skilled or professional way.
The pianist played a beautiful melody that captivated the audience.
Pianist → It is formed from "piano" (from Italian *piano*, meaning soft or quiet, referring to the musical instrument) and "-ist" (meaning one who practices or is concerned with). A pianist is someone who plays the piano.
Think of someone who plays the piano — the word 'piano' refers to the instrument, and '-ist' indicates a person who practices it.