Most specifically the last 10 minutes of the movie when this song plays. A La Claire Fontaine from The Painted Veil. The film is an adaptation of W. Somerset Maugham‘s novel starring Ed Norton and Naomi Watts. And  the song is a traditional French folk tune/children’s rhyme.

the painted veil poster
the painted veil poster

At the Clear Fountain
Children’s Song
(English)

At the clear fountain,
While I was strolling by,
I found the water so nice
That I went in to bathe.

Chorus
So long I’ve been loving you,
I will never forget you.

Under an oak tree,
I dried myself.
On the highest branch,
A nightingale was singing.

Chorus

Sing, nightingale, sing,
Your heart is so happy.
Your heart feels like laughing,
Mine feels like weeping.

Chorus

I lost my beloved,
Without deserving it,
For a bunch of roses,
That I denied her.

Chorus

I wanted the rose
To be still on the bush,
And my sweet beloved
To be still loving me.
(other version:
And even the rosebush
To be thrown in the sea.)

Kinda makes you wanna watch the movie doesn’t it?