The Mysterious Sound

 is the ninety-fourth episode of "The Backyardigans 2.0" written by Hornean.


 * Victor (Musician Victor)
 * Ramona (Conductor Ramona)
 * Pablo (Xylophonist Pablo)
 * Tyrone (Sousaphonist Tyrone)
 * Uniqua (Clarinetist Uniqua)
 * Tasha (Trombone Player Tasha)
 * Andrew (Violinist Andrew)
 * Ronnie (Saxophonist Ronnie)
 * Jason (Drummer Jason)
 * Austin (King Austin)
 * Jordan (Queen Jordan)
 * Martin (Prime Minister Martin)
 * Sophie (Professor Sophie Contralto)