Rita Jahanforuz, 50 years old, is Israel's most famous female singer—and suddenly she's big in Iran. Iranian-born and fluent in Persian, Rita, as she is universally known, moved to Israel as a child and has lived there ever since. Her latest album, "All My Joys," revives old-time Persian hits, giving them an upbeat Mediterranean flavor that caters to the Israeli ear.

The album went gold in Israel in just three weeks, despite being sung entirely in Persian. It also propelled Rita onto the music scene in Iran, where she was all but unknown outside of Iran's small Jewish population.

Now, from nightclubs in Tel Aviv to secret underground parties in Tehran, Israelis and Iranians alike go wild when the DJ plays her hit "Beegharar," or "Restless."