An accompanist is a musician who plays a musical instrument or provides vocal support to another musician or singer during a performance or rehearsal. The accompanist's role is to enhance and support the main performer's music by providing a complementary melody, harmony, or rhythm. Accompanists can work in a variety of musical genres, including classical, jazz, pop, and folk, and may play instruments such as piano, guitar, or drums, or sing in a duet or choir. Accompanists are often highly skilled musicians who can improvise and adapt to changes in the music or performance as needed.