#5 Tony - Disney's Lady and the Tramp (1955) from Animator John Lounsbery
What we wouldn't give to find a full pencil test of Lounsbery's Tony going on to sing "Bella Notte" from this sequence. As Ffish pointed out, Lounsbery was one of the highest regarded draftsmen at Disney. Alas the original character sketches below will have to suffice for now. Additional to animating Tony and other secondary characters, Lounsbery was the animation director on Lady and the Tramp.
Lounsbery left a legacy at Disney, animating and later directing at the studio from 1935 to his death in 1976. There's a certain affinity to Lounsbery for this Colorado animation studio, as the animator was raised in Colorado and graduated from the Art Institute of Denver. (Disney Legends)