Minnie was a toon violence victim twice (the cymbals and the sandbag). But the violence didn't cause major damage to her. That was a good decision. Cartooniness should be somewhat restrained when applied to Minnie.
This short had the weakest animation of the three, though. The animation for Minnie on the double bass was lifeless. The story was just Minnie chasing the trumpet, and then when she catches it it's over.