Music Land

Music Land is a Silly Symphonies animated Disney short released in 1935.

Across the Sea of Discord, the Isle of Jazz is a jazzthemed kingdom alive with hot jazz music and dancing, but the prince an alto saxophone takes little interest in it. Sneaking out, he spots the princess across the sea with the aid of a clarinettelescope, and instantly falls in love with her. He quickly travels across the sea on a xylophone boat to meet her.Their flirting is interrupted, however, when the princesss mother a cello of the Land of Symphony sends her guards to lock the prince in a metronome prison tower. To escape this predicament, he writes a note for help the melody of The Prisoners Song and passes it to a bird, which brings it to his father a baritone saxophone, who raises the battle cry a jazz version of the military tune Assembly bugle call. ........

Source: Wikipedia