Mexican pop rock band from Mexico City formed in 1986. Their only album, "Un Día Entre Sí Y No", was the first Mexican rock album released in four different formats: cassette, 45 RPM, LP, and CD. They experienced success and critical acclaim throughout their short-lived career. Their songs were played on all mainstream radio stations from all over the country. The band dissolved in January 1991 due to conflicts with the record company management.