Hint (highlight to view): Why are there 12 (but sometimes an extra)?
(If you don't see an audio player, click here to open the audio file.)
The music is "Chopsticks" and the other items are a (roseate) spoonbill, a fork in the road, and a Swiss army knife. The theme is utensils.
Hurrah for solvers Charlie*, Zachary Z., Carl, Maddy*, Hazel*, Jason, Zachary S.* (with help from his daughter Martina), and Dr. Yetman*! (The ones with the asterisk got the bonus points by knowing the names of all four items.)