song written by his uncle Martín Maestre entitled "Me mata el dolor". According to El Heraldo, this album with Juancho Rois was one of the successes of his musical career. Despite the success they achieved with this album, Juancho Rois was bothered by Diomedes' personality and there were personal differences within the group, so Rois decided to leave. "Colacho" Mendoza (1978-1984) Diomedes would consolidate his regional success with accordion players such as Nicolás "Colacho" Mendoza, and then towards the interior of Colombia in the early 1980s, especially due to the deployment that his record label gave them, CBS which included commercials on the national chain. By this time, in Bogota had already consolidated Binomio de Oro, made up of his friend Rafael Orozco and the accordion player Israel Romero, so there started a competition in the market with them. The union of Diomedes with "Colacho" occurred after a proposal from Diomedes, in which the manager Dagoberto Suárez intervened, who contacted the musician during a party in the south of La Guajira. The first album by Diomedes and "Colacho" was "Dos grandes" which was released in 1978. Diomedes included a song of his authorship entitled "Despedida de soltero". The song "El gavilán mayor" was recorded by Diomedes to honor his friend Raúl Gómez Castrillón, alias "Gavilán Mayor", who was one of the first marijuana traffickers or "marimberos" that the North Coast of Colombia had. The following year, in 1979, Diomedes and "Colacho" recorded the album "Los Profesionales", which included the song "El limoncito" by Martín Maestre; Diomedes included two songs of his authorship, "El profesional" and "El 9 de abril". This same year, Diomedes and Colacho made their first appearances on "El Show de Jimmy" on Do Re Creativa TV, returning to the program in 1980. The third musical production with "Colacho" was published in 1980 and titled "Para mi fanaticada". Diomedes included his songs "Para mi fanaticada" and "Mi casa risueña". According to El Heraldo, this album with Colacho Mendoza was among the successes of Diomedes' musical career. During the same year, Diomedes and "Colacho" recorded the LP, "Tu serenata" with two songs made by him, "Tu serenata" and "Penas de un hogar". The album "Con mucho estilo" was recorded in 1981 with a song by Diomedes dedicated to his father Rafael María Díaz entitled "A mi papá" and another called "Bonita" inspired in his wife Patricia Acosta. In 1982,