Before Heidi Mollenhauer performed the singing voice of Esmeralda in
Disney's
The Hunchback of Notre Dame (1996), she was a singer at a local night-bar. Heidi was then approached by
Gary Trousdale and
Kirk Wise, who were looking for someone to provide the singing voice for "Esmeralda." It was Heidi's first, and only, experience in voice acting.
Heidi also made a self appearance in the documentary
The Making of Disney's 'The Hunchback of Notre Dame' (1996), alongside
Tom Hulce and
Demi Moore. Following this, Heidi literally disappeared from movies, theatre and television.