A of other musically-themed Tom and Jerry episodes?
Originally a background obstacle, Spike becomes the tool for Jerry’s revenge once the mouse unties him. Conclusion: A Legacy of Slapstick [S1E26] Solid Serenade
The short is historically significant for several animation and musical milestones: A of other musically-themed Tom and Jerry episodes
It introduced the "jackass" running gag, where Spike literally transforms into a donkey after being tricked into playing "fetch" with a wooden beam. Narrative Structure: The Three-Way Rivalry [S1E26] Solid Serenade
Tom & Jerry in “Solid Serenade” (1946) | - Cartoon Research