IPA: /djuˈɛtɪst/
KK: /djuˈɛtɪst/
A person who sings or plays music as part of a duet, which is a performance by two people.
The duettist captivated the audience with their harmonious performance.
Duettist → It is formed from "duet" (from Italian "duetto", meaning a piece of music for two voices or instruments) and "-ist" (meaning a person who performs or specializes in). A duettist is a person who performs a duet, typically in music.
Think of a duet, which is a musical piece for two, and remember that a duettist is someone who performs that piece.