Slapping and popping are ways to produce percussive sounds on a stringed instrument. They are primarily used on the double bassorbass guitar. Slapping on bass guitar involves using the edge of one's knuckle, where it is particularly bony, to quickly strike the string against the fretboard. On bass guitars, this is commonly done with the thumb, while on double bass, the edge of the hand or index finger may be used. Popping refers to pulling the string away from the fretboard and quickly releasing it so it snaps back against the fretboard. On bass guitar, the two techniques are commonly used together in alternation, though either may be used separately.
On the double bass, the technique was developed by jazz bands in New Orleans in the early 1900s, and later spread to other genres, including western swing, rockabilly, and other offshoots of those styles.
Slapping is a technique also adopted by acoustic and electric fingerstyle guitarists.[1]
On double bass, the earliest players of this technique in American music include Bill Johnson (1872–1972), Theodore "Steve" Brown (1890–1965),[2] Wellman Braud (1891–1966), and Pops Foster (1892–1969).[2]
Onbass guitar, slapping usually refers to a percussive playing technique most commonly used in funk, disco, soul, R&B, jazz, country music, rock, and many other genres. The style sounds much more percussive than regular plucking of notes with the soft part of the plucking hands fingers, and is also usually louder (although on an electric instrument, the volume can be adjusted with the volume knob or through compression), brighter, and more distinct than the sound of a bass guitar played with the usual plucking or pick techniques.
The slap sound comes from the combination of two elements: slapping, which involves striking the string with the side of the bony joint in the middle of the thumb, a harder surface than the pads of the fingers (used in plucked fingering); and intentionally allowing the vibrating string to come into contact with the metal frets, producing a "toney" or buzzing sound that is normally avoided in plucked/fingered bass.
In the slap technique, the bassist replaces the usual plucking motion of the index and middle fingers with "slaps" and "pops". In the slap, the bassist uses the thumb to strike the strings (usually the lower E and A strings) near the base of the bass's neck. In the pop, the bassist will use the index or middle finger of the plucking hand to snap the strings (usually the higher D and G strings) away from the body of the bass, causing them to bounce off the fretboard; this produces a prominent buzzing tone with a sharp attack and more high-frequency vibrations than present in plucked bass.
The bassist can play many notes quickly by rotating the forearm, alternately slapping and popping: during the pop, the hand moves away from the fretboard, "winding up" or getting in position for the next slap. The slap and pop techniques are commonly used with pull-offs and hammer-ons with the fretting (usually left) hand, to further increase the rate at which notes may be played. Ghost notes, or notes played with the string damped, are also commonly played in slap bass to increase the percussive feel of the technique.
The invention of slap on electric bass is generally credited to funk bassist Larry Graham.[3] Graham has stated in several interviews that he was trying to emulate the sound of a drum set before his band had found its drummer. Graham himself refers to the technique as "thumpin' and pluckin'".[3]
