Acording to an interview to Mélanie Doutey, she was help by a dialect coach during a month before the shooting, because she could not speak Spanish at the time.
Nelson:
You know what's that?
José María Loygorri, 'Txema':
A bullet.
Nelson:
I always keep one of these... for traitors.
On chapter 5 of the DVD, almost at minute 19 of the film, a caption says it's 1973. There's a wedding and while Amaia sings (00:20:33) we can see a cymbal in the background, whose brand is Sabian. This brand was founded in Canada in 1981.
Theatrical version 125 min. and extended version 134 min.
Spanish
EUR5,000,000 (estimated)
$9,887,193