Betty Boop is one of the most iconic cartoon characters of all time, a virtual sex symbol created during a time where bold women were often frowned upon. The character’s signature vocals stood out, but she wouldn’t exist if it weren’t for a Black woman in Harlem who inspired the style. Those famous words “Boop-Oop-A-Doop” that are so famously associated with Betty Boop, and the girlish “booping” style, were first sung and performed on stage in the Harlem Cotton Club by a jazz singer named Baby Esther.