Rockabilly music has musical styles from blues music and country music. It uses the acoustic guitar, the electric guitar, the double bass, drums, and singing. Some Rockabilly songs also use the piano or the harmonica. Rockabilly music usually has a strong rhythm from the double bass being played in a "slap" style. Rockabilly singers often use a wide range, with high notes and many shouts like “go man go” and "yeah!"