The Bass Guitar

  • Similar in appearance and construction to an electric guitar, but with a longer neck and scale length, and four to six strings or courses.

  • Some bassists use both fretted and fretless basses in performances, according to the type of material they are performing, e.g. Pino Palladino or Tony Levin.

  • Some fretless basses have "fret line" markers inlaid in the fingerboard as a guide, while others only use guide marks on the side of the neck./li>
The bass guitar (also called electric bass, or simply bass; is a stringed instrument played primarily with the fingers or thumb, by plucking, slapping, popping, tapping, thumping, or picking with a plectrum, often known as a pick. The bass guitar is similar in appearance and construction to an electric guitar, but with a longer neck and scale length, and four to six strings or courses. The four-string bass—by far the most common—is usually tuned the same as the double bass, which corresponds to pitches one octave lower than the four lowest pitched strings of a guitar (E, A, D, and G). The bass guitar is a transposing instrument, as it is notated in bass clef an octave higher than it sounds (as is the double bass) to avoid excessive ledger lines. Like the electric guitar, the bass guitar is plugged into an amplifier and speaker for live performances. Since the 1960s, the bass guitar has largely replaced the double bass in popular music as the bass instrument in the rhythm section. While types of bass lines vary widely from one style of music to another, the bassist usually fulfills a similar role: anchoring the harmonic framework and establishing the beat. Many styles of music utilise the bass guitar, including rock, metal, pop, punk rock, country, reggae, gospel, blues, and jazz. It is often a soloing instrument in jazz, fusion, Latin, funk, and in some rock and metal styles.

Another design consideration for the bass is whether to use frets on the fingerboard. On a fretted bass, the frets divide the fingerboard into semitone divisions (as on a guitar). Fretless basses have a distinct sound, because the absence of frets means that the string must be pressed down directly onto the wood of the fingerboard as with the double bass. The string buzzes against the wood and is somewhat muted because the sounding portion of the string is in direct contact with the flesh of the player's finger. The fretless bass allows players to use the expressive devices of glissando, vibrato and microtonal intonations such as quarter tones and just intonation. While fretless basses are often associated with jazz and jazz fusion, bassists from other genres have always used fretless basses, such as Freebo (country), Rick Danko (rock/blues), Rod Clements (folk), Steve DiGiorgio (metal), Colin Edwin (modern/progressive rock). Some bassists use both fretted and fretless basses in performances, according to the type of material they are performing, e.g. Pino Palladino or Tony Levin.

The first fretless bass guitar was made by Bill Wyman in 1961 when he converted an inexpensive Japanese fretted bass by removing the frets. The first production fretless bass was the Ampeg AUB-1 introduced in 1966, and Fender introduced a fretless Precision Bass in 1970. Around 1970, Rick Danko from The Band began to use an Ampeg fretless, which he modified with Fender pickups—as heard on the 1971 Cahoots studio album and the Rock of Ages album recorded live in 1971. Danko said, "It's a challenge to play fretless because you have to really use your ear."

In the early 1970s, fusion-jazz bassist Jaco Pastorius created his own fretless bass by removing the frets from a Fender Jazz Bass, filling the holes with wood putty, and coating the fretboard with epoxy resin. Some fretless basses have "fret line" markers inlaid in the fingerboard as a guide, while others only use guide marks on the side of the neck. Tapewound (double bass type) and flatwound strings are sometimes used with the fretless bass so the metal string windings do not wear down the fingerboard. Some fretless basses have epoxy coated fingerboards to increase the fingerboard's durability, enhance sustain, and give a brighter tone.