The Sapphires (2012, released 2013).
 

http://www.imdb.com/title/tt1673697/combined

A group of four aborigine girls go to Vietnam to sing to the troops.

The movie is absolutely fantastic, one of my favorite movies of the year so far. Highly recommended, but go to the showtimes soon because at least here it plays for a very very short time. A+.

Re: The Sapphires (2012, released 2013).
 

Yeah, Australia had their 2nd annual version of The Oscars earlier this year, this movie was nominated for 12 awards and won 11 of them.

(Best Film, Direction, Adapted Screenplay, Cinematography, Editing, Sound, Production Design, Costume Design, Lead Actor, Lead Actress, Supporting Actress... it lost Visual Effects.)

Trailer for the lazy:

<iframe width="560" height="315" src="http://www.youtube.com/embed/aaOdZr4UxOc" frameborder="0" allowfullscreen></iframe>