Slap bass is a playing technique used primarily on the bass guitar that involves striking the strings with the thumb and pulling them with the fingers. This method creates a percussive sound that is distinct and rhythmic, making it popular in various music genres, including funk, jazz, and rock. The technique was popularized by musicians like Larry Graham and Victor Wooten, who showcased its versatility and expressiveness. Slap bass can add a dynamic element to a performance, allowing bassists to create complex patterns and grooves that enhance the overall sound of a band.