Yann Tiersen is one of my favorite pianist / composers - what he did with the score of Amelie was amazing - one instrument - a myriad of emotions - sheer genius.
The track has this wonderful descending motif - four chords that create the essence of the entire piece. Literally translated as "Rhyme of another summer" it's a little bit melancholic but so wonderfully familiar that it leaves you feeling super peaceful by the end.