Director Bahman Ghobadi (A Time for Drunken Horses, Turtles can Fly), sheds lights on the Iran’s repressed underground music scene in his latest film No One Knows About Persian Cats (winner of the Un Certain Regard Jury Prize at the Cannes film festival). Both Hypernova and Yellow Dogs, two of the film’s featured bands, will be performing live this Friday at U Street Music Hall.