Another design consideration for the bass is whether to use frets on the fingerboard. On a fretted bass, the metal frets divide the fingerboard into semitone divisions (as on an electric guitar or acoustic 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 with the fingers, 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 lets players use expressive approaches such as glissando (sliding up or down in pitch, with all of the pitches in between sounding), and vibrato (in which the player rocks a finger that is stopping a string to oscillate the pitch slightly). Fretless players can also play microtones, or temperaments other than equal temperament, such as just intonation.
Double-drumming was developed to enable one person to play the bass and snare with sticks, while the cymbals could be played by tapping the foot on a "low-boy". With this approach, the bass drum was usually played on beats one and three (in 4/4 time). While the music was first designed to accompany marching soldiers, this simple and straightforward drumming approach eventually led to the birth of ragtime music when the simplistic marching beats became more syncopated. This resulted in a greater 'swing' and dance feel. The drum set was initially referred to as a "trap set", and from the late 1800s to the 1930s, drummers were referred to as "trap drummers". By the 1870s, drummers were using an "overhang pedal". Most drummers in the 1870s preferred to do double drumming without any pedal to play multiple drums, rather than use an overhang pedal. Companies patented their pedal systems such as Dee Dee Chandler of New Orleans 1904–05. Liberating the hands for the first time, this evolution saw the bass drum played with the foot of a standing percussionist (thus the term "kick drum"). The bass drum became the central piece around which every other percussion instrument would later revolve.
In the early 1940s, many jazz musicians, especially African American jazz musicians, started to stray from the popular big band dance music of the 1930s. Their experimentation and quest for deeper expression and freedom on the instrument led to the birth of a new style of music based from Harlem called bebop music. Whereas swing was a popular music designed for dancing, bebop was a "musician's music" designed for listening. During the bebop era, given that bands no longer had to accompany dancers, bandleaders could speed up the tempo. Bebop was also much more based on improvisation, in comparison to the heavily arranged big band scores. Bebop musicians would take an old standard and re-write the melody, add more complex chord changes, resulting in a new composition.
No matter how you choose to distinguish yourself - acoustic-electric, custom, signature model, extended range or the tried-and-true standbys - one thing that will never change is that music is a personal thing. Only you can decide which bass guitar belongs onstage and in the studio with you, so you've got every reason to check out all the instruments here: chances are you'll know the right one when you find it.