Rich vocal harmonies combined with teen romance.
Doo-wop originated in the 1940s among Black youth in large cities like New York, Baltimore, Philadelphia, and Detroit. The hallmark of a doo-wop song is strong vocal harmony, a wide range of vocal parts, nonsense syllables, and a teen melodrama.
Doo-wop was born out of the rhythm and blues and swing music styles and the vocal tradition of barbershop music (another genre thought of as "white" that has Black American roots). Doo-wop had a profound influence on rock and roll, Motown, soul, and even proto-punk (Lou Reed, Jonathan Richman) and punk (the Ramones) artists.
The moon may be high
(Sha bop sha bop)
But I can't see (sha bop sha bop) a thing in the sky
I only have eyes for you
"I Only Have Eyes For You" by Al Dubin, performed by The Flamingos
Earth angel, earth angel
Will you be mine?
My darling dear
Love you all the time
I'm just a fool
A fool in love with you
"Earth Angel" The Penguins
They recorded 13 Billboard top-30 hits.
Singers of some of the all-time great romantic ballads.
The big bands get smaller and grittier.
Jazz music moves off the dance floor.
The blues plugs in.
The biggest musical phenomenon of the 20th-century.