Piggy No. 3: German?

Speaking of Germany and economic virtue, here is a question about the Walt Disney classic, Three Little Pigs. Take a look at the third little piggy, the one who builds his house of bricks.  He wears overalls.  In American pop culture circa 1933 (the date of the cartoon’s release), only farmers and Germans wore overalls, and I don’t see a farm.  Also, the first two piggies play the flute and fiddle, while No. 3 has a piano with sheet music.

Am I reading in too much?  (I do not see the framed portrait of dear old dad as a string of Würstchen as a corroborating clue, by the way.)