The "I Understand" sheet music by Kim Gannon & Mabel Wayne, featuring Jimmy Dorsey, is a vintage and collectible piece from 1941. Published by Leo Feist in the United States, this sheet music falls under the genre of Musicals and is a unique addition to any musical enthusiast's collection. With its nostalgic appeal and historical significance, this sheet music allows musicians to enjoy and perform classic tunes from the mid-20th century.