After starring in the indie hit "Once" in 2007 and winning the Academy Award for the best original song ("Falling Slowly"), folk rock musicians Glen Hansard and Marketa Irglova won over audiences and skyrocketed to fame. For them life seemed to imitate art—the onscreen relationship was closely intertwined in both fact and fiction. But when they got back to post-Oscar reality, Hansard, 35, and Irglova, only 18 years old, decided to dive in and ride the wave of newfound popularity by heading on tour. This subtle and mesmerizing black-and-white music documentary bears witness to the band and the couple, from musical numbers that pleasure the ears and vibrate the screen to quiet moments where body language and silent pauses linger with foreboding heartbreak. It has always been apparent that the modest duo has a special connection musically, but when the offstage relationship doesn't run as smoothly, it raises real questions about the future.