tonight she shares her story with angie goth. >> reporter: erin will let took "the voice" by storm. behind that smile was a very sad story. >> i found out my father had cancer over the filming when i was living in new york. about an hour later, i got a call from the show saying that i might possibly have an opportunity to be on "the voice." >> her dad chuck who was once the voice of a d.c. oldies band was her inspiration. he made her audition, but he lost his battle with pancreatic cancer. >> i was probably the most nervous about sighing my father on tv knowing that he's already passed away. >> she recalls watching the show with a wave of emotion. >> it's really a great moment when no words can be spoken, and you can just see someone's face and how proud they are of you. >> reporter: it was an experience her mother feels lucky to have shared. >> for xhuk he chuck especially to wait my whole life to see this moment. >> reporter: soon erin will return ready to sing her heart out knowing her hero is still watching. >> i'm so glad he was there for it, and yeah, now i get a little angel