If you press your ear up to a gate, you’re likely to hear what’s going on on the other side. The other people on the other side won’t know you are listening to their conversation because you are so sneaky and clever. They’ve no idea you’re on the other side of the gate hearing every word they say.
From the other side of the gate, you hear one of the people on the other side start to play a song on a recorder. You recognize the song as “Hot Cross Buns (ぶん).” You haven’t heard this song in a long time. “Hot cross buns… hot cross buns~”