Artist: Andrés Calamaro - Vocals: Andrés Calamaro - Artist: Alejandro Sanz - Piano: German Wiedemer - Organ: German Wiedemer - Double Bass: Antonio “Toño” Miguel - Mixer: Carlos Narea - Mixer: Ángel Martos - Mastering Engineer: Ángel Martos - Producer: Carlos Narea - Recording Arranger: German Wiedemer - Co-Producer: German Wiedemer - Principal Director of Music: German Wiedemer - Assistant Producer: Carlos Narea - Percussion: Martin Bruhn - Background Vocalist: Txell Sust - Background Vocalist: Crystal Torres - Background Vocalist: Glenda Del Monte - Background Vocalist: Sara Divine - Background Vocalist: Víctor Mirallas - Background Vocalist: Alfonso Pérez - Recording Engineer: Ángel Martos