Mezzo-soprano Giada Amparan (United States), 2006
Baritone Stefano Anselmi (Italy), 2006
Soprano Simona Bertini (Italy), 2006
Bass-baritone Raffaele Costantini (Italy), 2005
Pianist Norman Dunfee (United States), 2007
Tenor Todd Geer (United States), 2007
Mezzo-soprano Takako Horaguchi (Japan), 2005
Pianist Raymond Hughes (United States), 2007
Soprano Melody Kielisch (United States), 2006 and 2007
Tenor Sergej Kiselev (Russia), 2006
Soprano Eilana Lappalainen, (Finland/Canada), 2005, 2006 and 2007
Mezzo-soprano Jennifer Larmore (United States), 2007
Human Touch with David Lynch (United States), 2007
Pianist Jenia Manoussaki (Greece), 2006
Baritone Pietro Masi (Italy), 2005
Soprano Maria Francesca Mazzara (Italy), 2005
Tenor Giorgio Aristo Mikroutsikos (United States), 2006 and 2007
Bass Carmine Monaco (Italy), 2005
Baritone Armando Mora (Mexico), 2006
Tenor Amedeo Moretti (Italy), 2005
Pianist Tania Panayanopoulou (Greece), 2005
Tenor Sergio Panajia (Italy), 2005
Bass-baritone William Powers (United States), 2007
Director Gianni Romangiolli (Italy), 2005 and 2006
Bass Antonio Stragapede, 2006
Taximi (Sweden), 2007
Soprano Irini Tsirakidis (Greece), 2007
Baritone Stefano Viti (Italy), 2005 and 2006
Stratos Vougas Jazz Quartet (Greece), 2007
Pianist and Cembalist Yannis Xylas (Greece), 2005 and 2006