I heard a little of this piece used as a musical background for the news a journalist used to send from the Cannes 2011 Film Festival. It was played by all the orchestra (or at least by many string instruments-violins, I think). To me it sounded romantic and maybe a little sad. I do not know if it is music composed especially for a movie or it is "classical" music, but I am sure it is well-known. It sounds approximately like this:
c'4 d'4 e'4 f'4 g'2 g'2 a'2 a'2 g'1
where the letters are musical notes and the figures are: 1=whole note, 2=half note and 4=quarter note; the apostrophes are just separators.
I am sorry I cannot offer more details. Thank you in advance for your time, understanding and help for identifying this musical piece,
JP