Question: What book written by Maria von Trapp inspired a famous musical that was performed live on ITV in 2015?
Sentence (from "The Sound of Music Live (2015)"): Notable cast members include: Kara Tointon, Katherine Kelly, Alexander Armstrong, Julian Ovenden, Mel Giedroyc, Maria Friedman and notable child actors including Guy Trundle, Tom Sargent and Zac Lester, among others.
Relevant evidence: No