Bebop

Bebop or bop is a style of jazz developed in the early to mid-1940s in the United States. It is characterized by a fast tempo, complex chord progressions—with rapid chord changes, changes of key, and substitute chords—along with virtuosic improvisation based on a combination of harmonic structure, scales, and occasional references to the melody.

Bebop developed as the younger generation of jazz musicians expanded the creative possibilities of jazz beyond the popular, dance-oriented swing music-style to a new "musician's music" that was not as danceable and demanded close listening. As bebop was not intended for dancing, it enabled the musicians to play at faster tempos. Bebop musicians explored advanced harmonies, complex syncopation, altered chords, extended chords, chord substitutions, asymmetrical phrasing, and intricate melodies. Bebop groups used rhythm sections in a way that expanded their role. Whereas the key ensemble of the swing music era was the big band of 16–18 musicians playing in an ensemble-based style, the classic bebop group was a small combo that consisted of saxophone (alto or tenor), trumpet, piano, guitar, double bass, and drums playing music in which the ensemble played a supportive role for soloists. Rather than play heavily arranged music, bebop musicians typically played the melody of a composition (called the "head") with the accompaniment of the rhythm section, followed by a section in which each of the performers improvised a solo, then returned to the melody at the end of the composition.

Some of the most influential bebop artists, who were typically composer-performers, are alto sax players Charlie Parker and Sonny Stitt; tenor sax players Dexter Gordon, Sonny Rollins, and James Moody; clarinet player Buddy DeFranco; trumpeters Fats Navarro, Miles Davis, and Dizzy Gillespie; pianists Bud Powell, Barry Harris and Thelonious Monk; trombonist J.J. Johnson; electric guitarist Charlie Christian; and drummers Kenny Clarke, Max Roach, and Art Blakey.

The term "bebop" is derived from nonsense syllables (vocables) used in scat singing; the first known example of "bebop" being used was in McKinney's Cotton Pickers' "Four or Five Times", recorded in 1928. It appears again in a 1936 recording of "I'se a Muggin'" by Jack Teagarden. A variation, "rebop", appears in several 1939 recordings. The first known print appearance also occurred in 1939, but the term was little used subsequently until applied to the music now associated with it in the mid-1940s. Thelonious Monk claims that the original title "Bip Bop," for his composition better known as "52nd Street Theme," was the origin of the name "bebop."

Some researchers speculate that it was a term used by Charlie Christian because it sounded like something he hummed along with his playing. Dizzy Gillespie stated that the audiences coined the name after hearing him scat the then-nameless compositions to his players and the press ultimately picked it up, using it as an official term: "People, when they'd wanna ask for those numbers and didn't know the name, would ask for bebop." Another theory is that it derives from the cry of "Arriba! Arriba!" used by Latin American bandleaders of the period to encourage their bands. At times, the terms "bebop" and "rebop" were used interchangeably. (Although rebop differed from bebop with its more impressionist use of discordant chords.) By 1945, the use of "bebop"/"rebop" as nonsense syllables was widespread in R&B music, for instance Lionel Hampton's "Hey! Ba-Ba-Re-Bop".^{[citation needed]} The bebop musician or bopper became a stock character in jokes of the 1950s, overlapping with the beatnik.

The classic bebop combo consisted of saxophone, trumpet, double bass, drums and piano. This was a format used (and popularized) by both Parker (alto sax) and Gillespie (trumpet) in their 1940s groups and recordings, sometimes augmented by an extra saxophonist or guitar (electric or acoustic), occasionally adding other horns (often a trombone) or other strings (usually violin) or dropping an instrument and leaving only a quartet. This was in stark contrast to the large ensembles favoured during the swing era.

Bebop differed drastically from the straightforward compositions of the swing era and was instead characterized by fast tempos, asymmetrical phrasing, intricate melodies, and rhythm sections that expanded on their role as tempo-keepers. The music itself seemed jarringly different to the ears of the public, who were used to the bouncy, organized, danceable compositions of Benny Goodman and Glenn Miller during the swing era. Instead, bebop appeared to sound racing, nervous, erratic and often fragmented.

"Bebop" was a label that certain journalists later gave it, but we never labeled the music. It was just modern music, we would call it. We wouldn't call it anything, really, just music.