연주가 · 연주를
(musical) performance, playing an instrument
Example
그 피아니스트의 연주는 정말 아름다웠어요.
That pianist's performance was truly beautiful.
Word parts
연 perform+주 play music
Literally 'perform and play.'
Good to know
Use 연주하다 for instruments in formal contexts; in everyday speech 피아노를 치다 or 기타를 치다 is more common.