Ah, Snow Fairy Sugar. A modern anime classic, about a nice and normal girl, who happens to see season fairies. Fairies who control the seasons(duh!).
It's a cute series, one that's quite overlooked. In the early age of pure ecchi anime, Sugar stuck out and delivered so well. It's like anime of old, so cute and innocent. Not insulting and insane.
Of course, the music is one of it's many highlights. Saga(the main human girl character) is a skilled pianist, just like her mother. To recollect her memories, she plays this beautiful number. Enjoy and embrace it's warmth. ^_^