Susan Egan, the voice of Megara in the 1997 Disney animated feature “Hercules,” surprised guests with a performance of “I Won’t Say (I’m In Love)” at Disneyland After Dark: 90s Nite.

In her backstory, Hercules’ love interest Megara “Meg” sells her soul to Hades to save the man she loves, only for him to leave her. Therefore, she is apprehensive about her burgeoning feeli ...