Question: The father of the actress who played Vanessa Doofenshmirtz in "Phineas and Ferb" was an original member of what group?
Sentence (from "Olivia Olson"): Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in "Phineas and Ferb" and Marceline the Vampire Queen in "Adventure Time".
Relevant evidence: Yes