A bassist is a musician who plays the bass guitar or double bass, providing the harmonic foundation in a musical group. They typically play lower-pitched notes, which help to create rhythm and support the overall sound of a band. Bassists are essential in various music genres, including rock, jazz, and classical. In a band, the bassist often works closely with the drummer to establish the groove and rhythm. Their role is crucial for maintaining the structure of a song, allowing other instruments, like guitars and keyboards, to shine. Many famous bands, such as The Beatles and Queen, have had iconic bassists who contributed significantly to their sound.