in 1990, seimus recorded a home-made cassette, and in the same year delgadillo recorded another two, named "fernando delgadillo" and "la cancion informal" (informal song). in 1991 he recorded two more cassettes. in 1992, he recorded his first cd, "con cierto aire a ti" (with a certain air of you). the words in this title also have a double-meaning in spanish "con cierto = with a certain; concierto = concert".