The crossword solution for the term 'Doo Wop (That ___)' is 'THING' (5 letters). Doo Wop is a style of vocal-based rhythm and blues music that originated in the 1940s and 1950s. It is characterized by simple, catchy melodies and a four-part harmony. The term 'Doo Wop (That ___)' is often used to refer to a particular type of song within the genre, which typically features a call-and-response structure between a soloist and a group of singers. The word 'THING' is used to refer to this type of song, as it is something that can be heard and experienced.