"Sakura", the Japanese cherry blossom, starts around mid-March and reaches the farther North around May. It's a very popular event in the whole country, with many festivals where the Japanese people come together to sing --- and this song is one of the more well-known ones.
Thanks to Nazard223, who suggested to transcribe this piece in a YouTube comment.
For those who own a 7.1 surround system, an 8-channel FLAC file can be picked up here to get an impression of what it will sound like in my living room:
- URL: http://via.woody-mc.de/to/yI1ujpIyW8S8iKxv
- Player: Current versions of Media Player Classic are able to properly play multi-channel FLAC files.