CuÃ nod sang music by many different composers . He was famous for singing the part of Basilio in Mozart 's The Marriage of Figaro , the Astrologer in Rimsky-Korsakov 's The Golden Cockerel , and Sellem in Stravinsky 's The Rake 's Progress . CuÃ nod was known for his roles as Basilio in Mozart 's The Marriage of Figaro , the Astrologer in Rimsky-Korsakov 's The Golden Cockerel , and Sellem in Stravinsky 's The Rake 's Progress .