Arabic music is one of the oldest and most influential musical traditions in the world. Egypt's music in particular has captivated audiences throughout the Middle East. As Carol Castiel explains in this edition of Dateline, it's the performers who make Egyptian music so popular. In the past six months, Egypt has opened two museums of music to honor two of the country's singing legends, Oum Kulthum and Mohammed Abdel Wahab. A special institute has also been restored to preserve the country's musical traditions. Correspondent Laurie Kassman visited them and filed this report.