city, but through the years, as the Dinagyang evolves and the competition becomes more competitive, gaining worldwide fame and attention, schools are starting to create and organize tribes, introducing dynamic new dance patterns, formations and choreography, soliciting sponsors from private companies for expenses and the cost of participating in the competition. No actual Ati are involved, nor do they benefit in any way from this event. There are a number of requirements, including that the performers must paint their skin black and be indigenous; other kinds of materials can be used for the costumes. All dances are performed to drum music. Many tribes are organized by the local high schools, and in recent times, some tribes came from as far as Batanes in Luzon and Cotabato in Mindanao. The tribes receive a subsidy from the IFFI and the city government of Iloilo and recruit private sponsors, with the best tribes receiving the most. The current Ati population of Iloilo is not involved with any of the tribes nor are they involved in the festival in any other way, although recently the original Atis from the hinterlands of Panay, specifically from the mountains of Barotac Nuevo and Anilao, came to participate non-competitively for recognition and to give them importance as being the characters symbolically portrayed in the festival. Hala bira, a Hiligaynon phrase that means "dispense all means," is a popular catchphrase among Ilonggos to show enthusiastic involvement in the Dinagyang. During the celebration, the phrase is always heard attributed to the festival theme song, "Hala Bira, Iloilo!", played on every street in the city. The song was composed by award-winning musician and lyricist Dante M. Beriong and is one of the most recognizable festival theme songs in the Philippines. Dinagyang Legacy Dinagyang festival has brought a lot of innovations throughout the years. These innovations has influenced the way other festivals in the country is run. Among these are the following: Carousel Performance - Dinagyang initiated the simultaneous performance of the competing tribes in different judging areas. Mobile Risers - Mobile risers is prominent feature of Dinagyang choreography today. It was introduced by Tribu Bola-bola in 1994. The risers has added depth and has improved the choreography of the dance movements. Dinagyang Pipes - First used by Tribu Ilonganon in 2005, the Dinagyang pipes are made of PVC pipes and are hammered by rubber paddles. Each pipe produces a distinct sound