Yamanote Line platform jingles

I swear I was looking for a font when I came across this site with sound files of all the jingles played just before Yamanote trains depart from the station.

Here are a few tasters:

Meguro (clockwise)
Shinagawa (clockwise)
Takadanobaba (anticlockwise)

I don’t know why yet, but I’m sure this will come in useful one day!