Serenading us with a great piece of classical music should have done all through out without the voice acting. It just ruined the lovely scenery and attractive melody which is the biggest aspect of the video. It could have been the greatest PV of the summer if they've just removed it. ^^
The plot involves Five Japanese School children on their search of personal interests complicated by their own drama and life experiences. Though they have different concerns divided by their own set of goals they manage to converge to one single interest - music.