 Characters from other Silly Symphony cartoons appear in the  audience. Jenny Wren from _Who Killed Cock Robin? (1935)_ (qv), and  Practical Pig from _Three Little Pigs (1933)_ (qv) (as the bell  ringer) are the most visible. Also appearing are Dirty Bill from  _Robber Kitten, The (1935)_ (qv), Elmer and Tillie from  _Elmer Elephant (1936)_ (qv), the Harpo Marx bird from  _Who Killed Cock Robin? (1935)_ (qv), and Fifer Pig and Fiddler Pig  from _Three Little Pigs (1933)_ (qv). Goofy, Donald Duck and Horace  Horsecollar also appear.