Cologne Radio Chorus, Lamberto Gardelli, Lucia Aliberti, Plovdiv Philharmonic Orchestra, Anna Tomowa-Sintow, Ulrike Steinsky, Hungarian State Opera Orchestra, Ghena Dimitrova, Budapest Symphony Orchestra, Frankfurt Radio Symphony, Sofia Symphony Orchestra, András Kórodi, Rundfunk-Sinfonieorchester Berlin, Alexandrina Pendatchanska, WDR Sinfonieorchester Köln, Hungarian State Opera Chorus, Pinchas Steinberg, Marcello Viotti, Marcus Creed, Sylvia Sass, Rouslan Raichev, Michail Angelov, Sylvia Greenberg, Ruth Ziesak
