Question: Are the films Underdog and Mary Poppins Returns both musical films?

<P0-S0> Richard Morton Sherman (born June 12, 1928) is an American songwriter who specialized in musical films with his brother Robert Bernard Sherman. <P0-S1>  According to the official Walt Disney Company website and independent fact checkers, "the Sherman Brothers were responsible for more motion picture musical song scores than any other songwriting team in film history." <P0-S2>  Some of the Sherman Brothers' best known songs were incorporated into live action and animation musical films including: "Mary Poppins", "The Jungle Book", "The Many Adventures of Winnie the Pooh", "Chitty Chitty Bang Bang", "Snoopy Come Home", "Bedknobs and Broomsticks", "The Slipper and the Rose", and "Charlotte's Web". <P0-S3>  Their most well known work, however, remains the theme park song "It's a Small World (After All)". <P0-S4>  According to Time.com, this song is the most performed song of all time. <SEP> <P1-S0> Mary Poppins Returns (also known as Mary Poppins 2) is an upcoming American musical fantasy film directed by Rob Marshall and written by David Magee. <P1-S1>  It is the sequel to the 1964 film "Mary Poppins". <P1-S2>  The film stars Emily Blunt, Lin-Manuel Miranda, Ben Whishaw, Emily Mortimer, Pixie Davies, Joel Dawson, Nathanael Saleh, Julie Walters, Colin Firth, Dick Van Dyke and Meryl Streep. <P1-S3>  Set 25 years after the 1964 film, it will feature Mary Poppins, the former nanny of Jane and Michael Banks, re-visiting them after a family tragedy. <P1-S4>  The film is scheduled for release on December 25, 2018, giving it one of the longest gaps between film sequels in history. <SEP> <P2-S0> Robert Bernard Sherman (December 19, 1925 – March 6, 2012) was an American songwriter who specialized in musical films with his brother Richard Morton Sherman. <P2-S1>  According to the official Walt Disney Company website and independent fact checkers, "the Sherman Brothers were responsible for more motion picture musical song scores than any other songwriting team in film history." <P2-S2>  Some of the Sherman Brothers' best known songs were incorporated into live action and animation musical films including: "Mary Poppins", "The Jungle Book", "The Many Adventures of Winnie the Pooh", "Chitty Chitty Bang Bang", "The Slipper and the Rose", and "Charlotte's Web". <P2-S3>  Their most well known work, however, remains the theme park song "It's a Small World (After All)". <P2-S4>  According to Time.com, this song is the most performed song of all time. <SEP> <P3-S0> Underdog is a 2007 American family superhero comedy film based on the 1960s cartoon series of the same name. <P3-S1>  Directed by Frederik Du Chau and written by Joe Piscatella, Adam Rifkin, and Craig A. Williams, the film stars Jim Belushi, Peter Dinklage, John Slattery, and Patrick Warburton with the voice talents of Jason Lee, Amy Adams, and Brad Garrett. <P3-S2>  Unlike the TV series, the Underdog character is portrayed as a regular dog rather than an anthropomorphic one. <P3-S3>  Underdog, voiced by Jason Lee, was played by a lemon beagle named Leo sporting a red sweater and a blue cape. <P3-S4>  The film grossed $65.3 million worldwide.