Artist: Andrés Calamaro - Vocalist: Andrés Calamaro - Artist: Julio Iglesias - Piano: German Wiedemer - Organ: German Wiedemer - Double Bass: Antonio “Toño” Miguel - Percussion: Martin Bruhn - Mixer: Ángel Martos - Mixer: Carlos Narea - Mastering Engineer: Angel Martos - Producer: Carlos Narea - Co-Producer: German Wiedemer - Recording Arranger: German Wiedemer - Principal Director of Music: German Wiedemer - Assistant Producer: Rubén Suárez