The mid-1980s saw tumult for the station. Not long after becoming "Radio Metrópoli" and seeing its format move to 99.3 FM, the 1985 Mexico City earthquake severely damaged the station's studios and forced it off the air for a month. Sonido 89 would return in October 1985, but the decade of change continued; Ondas de Alegría, the group that owned XHM, was dissolved that same year, with ARTSA taking control of XHM and its sister stations. After a brief year as "Fórmula Melódica", XHM finally found a format that stuck, soft adult contemporary "Azul FM", in 1989, with both hits and lesser-known songs in English, French and Italian. The station's signature program in the Azul FM era was "Luna Azul", hosted by Jorge Lapuente. The station also featured programs dedicated to jazz, blues and Brazilian music.