I would like to know where the music piece in this video is coming from (from 0:00 to 2:30, and it starts again from 2:38). Typically, what is the artist, the title, etc.? (Ultimately, I would like to be able to play it on my piano, so it would be great to find a score/a transcription).
I was not able to find it using Midomi, and could not contact the owner of the Youtube channel to get more information.
Thank you for your help!