Casparo premiered at the Palau de la Musica Catalana in Barcelona on 18 July 2011 for an audience of 2000 spectators. It was commissioned by the International Joint Conference on Artificial Intelligence. We are grateful to Carles Sierra and the IJCAI trustees for making this performance possible.

Title roles were Inès Moraleda (Rosalinda), Bevery Green (Casparo) and Pablo López (Graziano). Joan Baptista Mora (tenor) completed the chorus. Elisa’s voice was performed by Katrien Beuls (Barcelona).

Casparo was produced by Marta Vaquer. Pere Josep Puértolas acted as musical consultant and director. Stage direction by Ana Silvestre, Scenary by Angela Bosch, Costume styling by Lenie Steels, Robotics and Visualisation by Michael Spranger assisted by Sebastian Hoefer, Video materials by Lara Mennes and Carl Jacobs.

Orchestra for Barcelona Performance: Conductor and concertino Oriol Alguéro, Sergi Alpiste, Francesc Guzmán, Josep Mascaró, violin I, Javier Ulises Illán, María Itaca Vicente, Jan Omedes, Tomás Alcaide, violin II, Anna Aldomà, Albert Madero, Diana Franov, viola, Laia Puig, Griselda messegué, cello, Alvaro Rosso, double bass, Sévérine Rospocher, flute, Jaume Sancho, clarinet, Bernat Farreras, oboe, Guillem Borras, bassoon.

Remi van Trijp and Oscar Vilarroya did the English translation and van Trijp managed the subtitles during both performances.

Further help was provided by: Sophie Boucher, Monica Rodriquez, Cristina Durisotti, Harmonia Carmona, and Alice Ledda.