Oi FM is the first customized radio station in Brazil, as a result of the partnership between Grupo Bel and Aorta. Aorta is responsible for the concept, mobile management and content of the project. Oi FM was launched in January of 2005 and is currently present in 6 major Brazilian cities (5 of which are state capitals): Rio de Janeiro, Belo Horizonte, Recife, Fortaleza, Vitória and Uberlândia. Two of the main characteristics of Oi FM are: mobile SMS interactive services and strong internet presence. In 2007 Oi FM had an average of over 500 thousand online listeners per month.