Robert Lopez (born February 23, 1975) is an American songwriter best known for the Broadway show Avenue Q, which he wrote with his wife Kristen Anderson-Lopez. For Disney, Robert Lopez wrote the music for Finding Nemo: The Musical, the Phineas and Ferb song Aerial Area Rug for the episode "Magic Carpet Ride", the 2011 Winnie the Pooh film, and the upcoming animated Disney film Frozen.