[1] He attended master classes with Alfredo Kraus, Renata Scotto, Renato Capecchi, Ernst Haefliger, Nancy Evans and Aldo Baldin.
[3] After moving to the UK, he sang with English National Opera in roles such as Dr Caius (Falstaff) under Mark Elder and Ladislav (The Two Widows).
He sang Platon Karataev (War and Peace) and The Italian Prisoner in Strauss's Friedenstag at the Concertgebouw in Amsterdam under Edo de Waart, also broadcast for Dutch Radio.
After making numerous concert and oratorio appearances in Moscow such as Das Lied von der Erde with the Kremlin Orchestra, Mozart's Requiem conducted by Yuri Simonov and Les Noces conducted by Gennady Rozhdestvensky at Moscow's Tchaikovsky Concert Hall, he continued this abroad.
Naoumenko sang Verdi's Requiem under David Willcocks at the Royal Albert Hall as well as Beethoven's Missa Solemnis and Bach's Christmas Oratorio in Stuttgart under Helmuth Rilling.