I'll try to make Disney/Pixar characters in young and stylish concepts, some kind of "students", something like the new Pixar's Movie: Monster University.
Ursula is the teacher of the university choir.
When she was young she failed in show business and that why she hates all young promises of the choir. (She want to steal everybody's voice XD)
Sadistic, power-hungry, manipulative and ambitious, Ursula only thinks of herself
Hope you like it!