They discuss how the film is n't accurate on the creation of the Sousaphone .
John Philip Sousa 's Contribution to American Music ( 6 : 39 ) lets the experts discuss the March King 's legacy .
experts discuss how the film is n't accurate on the creation of the Sousaphone .
John Philip Sousa 's Contribution to American Music ( 6 : 39 ) lets the experts discuss the March King 's legacy .