What Is Doo Wop?

The Chords
A form of R&B based harmony vocalizing using phonetic or nonsense syllables (like a repeated  "doo-wop") for rhythm and intricate harmonic arrangements

 

To be considered doo wop a song must fit into all five of the below, with minor exceptions:

Doo Wop Groups

Where did the name Doo Wop come from?