The bass guitar is a stringed instrument similar in appearance to an electric guitar but typically has four strings tuned an octave lower. It plays a crucial role in music by providing the harmonic foundation and rhythm in various genres, including rock, jazz, and funk. The instrument is usually played with fingers or a pick, and its deep, resonant sound complements other instruments in a band. Bass guitars can be either electric or acoustic, with electric bass guitars being more common in modern music. Notable bass guitarists, such as Paul McCartney and Flea, have showcased the instrument's versatility and importance in popular music. The bass guitar is essential for creating groove and depth in musical compositions.