From Wikipedia, the free encyclopedia. Jorge Maronna is an Argentine multi-instrumentalist, composer, singer, author and a founding member of the comedy-musical group Les Luthiers. Born August 1, 1948, in Bahía Blanca, he joined I Musicisti while still a teenager, and helped Gerardo Masana and Carlos Iraldi build the first informal instrument, the "contrachitarrone da gamba". In 1967, he was part of the four people who left I Musicisti and formed Les Luthiers. There, he and Masana composed most ...