Silveri studied first in Capestrano (L'Aquila) then in Milano with Perugini,[2] and later in Rome with Riccardo Stracciari and the bass Giulio Cirino (father of Silveri's wife Delia), making his debut there as Hans Schwartz, a bass role, in Die Meistersinger von Nürnberg in 1939.
[4] Thereafter, he rapidly sang throughout Italy, notably at the San Carlo in Naples, and La Scala in Milan, debut as de Luna in 1949.
[3] Silveri made his debut in the USA at the Metropolitan Opera in 1950, as Don Giovanni with Fritz Reiner conducting.
[7] He was especially noted for his interpretations of Verdi operas and some other roles like Scarpia (Tosca), Figaro (Il Barbiere di Siviglia), Guglielmo Tell and Don Giovanni.
Silveri retired from the stage in 1968 after a last performance of Rigoletto in Budapest with his daughter Silvia in the role of Gilda,[8] and taught in Rome, where he died at age 87 in the summer of 2001.