Always on the lookout here for good animation and puppet clips, so Puppetoon stuff is a natural winner. But this one is right off the charts. It's George Pal's Tubby the Tuba, from 1947.
That's got to be one of the most charming pieces of film ever put together. And credit where credit is due, YouTube user videos4everyone did a fine job putting it on the site.
Being a tuba needn't be a source of shame. Something to remember.