Duo comprised of Christina Rosenvinge (who has been in Ella y los Neumáticos) and Alex de la Nuez. Naif Spanish pop from the 80's. A big hit with ¡Chas! Y aparezco a tu lado, from their first album in 1987 (so they participated in OTI Festival in 1988).
Christina later found Christina y los Subterráneos with Alejo Stivell (Tequila).