Apprently, his real name was Sasha.
During 1940-1, Guryev studied at the Tallinn Conservatory
with Tiit Kuuzik.
During 1945-50, Guryev sang in the
choir of the Estonian SSR, while engaging in choral
conducting at the Department of the Tallinn Music School
and later at the Tallinn Conservatory.
During 1950–68, Guryev was soloist at the Opera and Ballet Theatre
Estonia. His repertory there included: Simpleton, Grigori,
Lensky, German, Paolo, Alfredo, Sinodal, Cavaradossi,
José, Oleg Koshevoï (
Molodaya gvardiya), Randla (Dalyokiye by Reïman),
(Ukradyennoye Schastye by Meytus), Riccardo, Hoffmann, Eisenstein, Mozart, Vladimir Igoryevich,
Simultaneously, Guryev sang Soviet songs including duets
with Georg Ots. Guryev was awarded the first prize in 1956
at the National competition for singers of Soviet songs
Starting in 1956, Guryev taught singing at the Tallinn
was its rector during 1970-182.