History of Jazz ③ The Bebop Revolution — Music to Listen To (1940s–1950s)
In the mid-1940s, in the small clubs of New York's 52nd Street, jazz became a completely different music. Instead of big-band spectacle: a small combo of four or five, tempos too fast to dance to, and harmony complex enough to make your head spin. This was the birth of bebop.
What changed
If swing was "music to dance to together," bebop was music by players, for players.
- Tempos got much faster and melodies turned twisting and intricate.
- Extra notes (tensions) were piled onto the chords for a tenser, more sophisticated color.
- The improvised solo became the center of the tune, and audiences listened instead of dancing.
Young players who worked day jobs in big bands gathered at night to push each other's limits in jam sessions.
Why it was built in back rooms
There's a reason bebop became "music by players, for players."
From 1942 to 1944 the American Federation of Musicians ran a recording ban. Radio and jukeboxes were putting players out of work by spinning records, and none of that money came back to them. So during the two years bebop was at its hottest, almost nothing was recorded. The music passed from person to person, hand to hand, in nightly jam sessions rather than on discs. "Ko-Ko" sounds like a birth certificate when it arrives in 1945, but really it's a music that had already been growing for years finally standing in front of a microphone.
Why bebop is so hard
Three things happen at once.
- The chords move much faster. What was one chord per bar in swing splits into two, or four. The player is standing on different harmony at every moment.
- Tensions. The 9th, 11th and 13th get stacked on top of the basic four notes, so the same chord takes on a tauter, deeper color. That characteristic bebop feeling of being permanently on the edge mostly comes from here.
- Contrafacts. Borrow a famous tune's chord progression exactly, write a brand-new melody over it. "Confirmation" and the whole family of "rhythm changes" tunes were born this way. It dodged copyright and let everyone start improvising immediately over a progression they already knew by heart — a thoroughly practical invention.
In other words bebop isn't music you listen to for the melody. It's music you listen to for the chord progression. Press a few tensions yourself and Parker's lines start to make a little more sense.
Press the colors tensions make — the "Tensions" lesson in Theory Lab→
The revolutionaries
- Charlie Parker (Bird): alto sax. The genius who created the very language of bebop — the benchmark for all improvisation since.
- Dizzy Gillespie: trumpet. Parker's comrade, who organized bebop theoretically and brought it to the public.
- Thelonious Monk: piano/composer. An aesthetic of crooked rhythm and dissonance, unlike anyone else.
- Bud Powell / Max Roach: architects of the new grammar for bebop piano and drums.
Essential listening
Charlie Parker – "Ko-Ko" (1945)
A recording like bebop's birth certificate. Listen to Parker's solo pouring out at dizzying speed.
Dizzy Gillespie & Charlie Parker – "A Night in Tunisia" (1946)
An exotic rhythm and that famous "break" solo. A signature bebop standard.
Thelonious Monk – "'Round Midnight" (1947)
One of the most-played ballads in jazz, with Monk's lonely, off-kilter beauty.
Charlie Parker – "Confirmation" (1953)
A textbook of bebop melody. Hear how a seamlessly flowing line can sound like speech.
Perhaps bebop burned too hot. Soon a current flowing the opposite way — toward a cool, restrained sound — appeared.