What is the name of the vocal group style, originating in the 1940s on street corners of cities like Baltimore and Philadelphia, that emphasises tight harmonies without instrumental accompaniment?

• A Barbershop
• B Doo-wop ✓
• C Acapella
• D Motown

Doo-wop, with its nonsense syllables and close harmonies, was one of the most popular forms of rhythm and blues in the 1950s and early 1960s.