Does this movie exist?

Perhaps ten years ago, I saw a trailer for a movie that I have never heard anything about since.

It was about a bunch of British Indian teenagers, who lived in Brixton or Compton or something, who worshiped American country music and were in a country band together. They set off on this road trip to Memphis as a sort of pilgrimage.

It looked like it could be the greatest road comedy ever made, but I never heard anything about it again.

Does this ring a bell with anyone?

Actually I think it was Nashville, not Memphis. Makes more sense, anyway.