Scott Bradley uses several themes for the score, commencing with Arthur Pryor's "The Whistler and His Dog" in this sentimental cartoon directed by Rudolf Ising.
It is a very cute cartoon, which is the main reason it does not appeal to me. My taste runs far more towards sharp humor, and the rounded character design, impeccable though it is, contributes to my dislike. Technically, it is irreproachable. Ising, and his partner Hugh Harman, clearly knew what effects they wished to create, and had the talent and staff to do so. Visually, this is the equal of anything that Disney created in this era That fact that it is so sweet and sentimental that I don't care for it is a matter of my taste. Yours, of course, may be different.