In spring 2005, Elefteriades co-organized a concert in Beirut, presenting some of the biggest names in Lebanese music: Nancy Ajram, Wadih El Safi, Myriam Fares, Ramy Ayach, Marwan Khoury, Amal Hijazi The entire proceeds of the event were forwarded, through the United Nations, to the southeast Asia tsunami victims. That same year he organized a free concert by the National Orchestra of "Nowheristan" at the UNESCO Palace, in collaboration with the United Nations, to celebrate the International Day of Peace.