Once: From screen to Broadway musical
5 April 2012 Last updated at 08:21 BST
Film-to-stage adaptations are commonplace, but few have such humble origins as the Irish film Once.
It was shot on a shoestring budget in just 17 days and has now been transformed into a high profile Broadway stage-musical.
Talking Movies' Tom Brook reports.
Talking Movies is broadcast on BBC World News on Saturday at 13:30 GMT and is repeated on Sunday at 00:30, 07:30 and 20:30 BST.