While studying, Cedeño joined a local merengue orchestra called "Los Nenes de Puerto Rico". His partners in the orchestra later became the members of the popular group Límite 21. He also joined the university theatre group working in several plays like "La Celestina" and "Bodas de Sangre". Cedeño also debuted in television shows in dramatic roles in soap operas such as "Alejandra", "Karina Montaner", and "Apartamento de Solteras" . He achieved recognition for his dramatic role as a young drug addict in the telenovela "Andrea".