I've heard this music a couple of times, I've even had A MAN AND A WOMAN in one of my Lisa Ono French CDs, but I found myself in the past few days getting rather addicted to the really well-known theme music from Claude Lelouche's UN HOMME ET UNE FEMME (A MAN AND A WOMAN, it won the Grand Prix at 1966's Cannes Film Fest and Oscar for Best Foreign Film, you can read about it in this entry at the 100 Films blog), composed by Francis Lai.
Especially after watching this beautifully shot scene.