A bass guitarist is a musician who plays the bass guitar, an instrument that provides the low-frequency foundation in a band. The bass guitar typically has four strings, tuned an octave lower than a standard guitar, and is essential in various music genres, including rock, jazz, and pop. Bass guitarists often work closely with drummers to create a rhythm section that supports the overall sound of a song. They may play simple, repetitive lines or complex melodies, depending on the style of music. Famous bass guitarists include Paul McCartney and Flea, known for their unique playing techniques and contributions to their respective bands.