[marsavar]

My favourite, when I lived in Japan many years ago, was the Musashi-Koganei melody in Tokyo: https://www.youtube.com/watch?v=cT2xTUPveCw

It stood very much in contrast with all the other jingles, and I simply loved it.

[ronyeh]

Is that a fancy dancy version of Sakura Sakura (probably the most famous Japanese folk song)?

https://m.youtube.com/watch?v=jqpFjsMtCb0

[jrockway]

It is.

There are possibly-recognizable tunes throughout the system. Vivaldi's Spring comes to mind. I think at Ooimachi.