Roberto Fresco is Organist at Santa María la Real de La Almudena, Cathedral of Madrid, and Organ Professor at the Real Conservatorio Superior de Música in Madrid
He was born in Astorga in 1967. He commences his organ studies with Miguel del Barco at the Real Conservatorio Superior de Música in Madrid. He continues his career with Montserrat Torrent focusing mainly upon Iberian Ancient Music and completes his formation with Michael Radulescu at the Hochschule für Musik und Darstellende Kunst of Vienna.

Hirono studied organ at the Tokyo National University of Fine Arts and Music. He continued his studies of organ and Protestant church music at the Westfaelishe Landeskirchenmusikschule Herford. In the 1970's, he studied the performance practice of 17th and 18th Century organ music at the Norddeutsche Orgelakademie. Since 1989, Hirono has held the position of professor for organ at his alma mater. He performs actively not only as a recitalist in Germany, France, Sweden and Finland, but also as a soloist with the prominent orchestras in Japan. He is also active as an organ consultant as well as the vice president of the Japan Association of Organists.

Ulrike Heider, born in Erlangen, Germany, studied at music conservatories in the Netherlands: church music and organ with Bert Matter and Hans van Nieuwkoop in Arnhem, choral and orchestral conducting with Jos Leussink and Tilo Lehmann in Zwolle and singing with Rebecca Stewart in Tilburg. At present, she is organist of the Haga Church, Göteborg, and teaches liturgical singing at the School of Music, Göteborg University.