 He portrayed Kachovsky in Shaporin's "The Decembrists".Nelepp was also known for his portrayals in European operas of Florestan in "Fidelio", Radames in "Aida", and Don Jose in "Carmen".He recorded arias from the roles of Pinkerton in "Madame Butterfly", Walther in "Die Meistersinger", and Eléazar in "La Juive".