Former Spanish electronic musician. From 1978 to 1980, Riaza was a member of El Aviador Dro y sus Obreros Especializados, under the Multiplexor alias. In 1980, alongside Arturo Lanz and Juan Carlos Sastre (themselves Aviador Dro members as well) left Aviador Dro and founded Esplendor Geométrico. He alongside Andrés Noarbe created Discos Esplendor Geometrico in 1985 (Riaza would later in 1989 leave the label's administration solely to Noarbe). Riaza left Esplendor (and the music scene) in 1995 and converted to Islam, changing his name to Gabriel-Jairodín.