MARTIN HASELBÖCK, EUROPEAN COMMUNITY YOUTH ORCHESTRA, CLAUDIO ABBADO, LONDON SYMPHONY CHORUS, LONDON PHILHARMONIC CHOIR, WOOBURN SINGERS, ST. ALBAN´S SCHOOL CHOIR, HABERDASHER´S ASKE´S SCHOOL BOY´S CHOIR, SOUTHEND BOYS CHOIR, DESBOROUGH SCHOOL CHOIR, THE-
