Nikolay Timofeyevich Gres (Russian: Николай Тимофеевич Гресь) was a Russian tenor and soloist of the Alexandrov Ensemble from about 1964 until 1973.
He was born in 1920 and died in 2002 or 2004 in Simferopol, Ukraine. Before joining the Ensemble, he was a soloist with the Black Sea Fleet Ensemble and, from 1955 to 1963, with the Bolshoi Theater. He became Honoured Artist of Russia in 1966.
With the Alexandrov Ensemble he recorded I was going back from Berlin (music: I. Dunaevsky; lyrics: L. Oshanin) (1966), The Birch Tree (1965), Truth of the Century (1970), The River Flows (1963), French Marching Song (Походная) lyrics by E.Mugel (1963), My Friends and an unknown song duets with A.S. Sibirtsev, The Grey Cuckoo (1965), Obelisks (music: Smolsky; lyrics: Yasen) or Обелиски (Д. Смольский – М. Ясень) (1966), The Head from the opera May Night by Rimsky-Korsakov or Песня про Голову из оперы “Майская ночь” (Н. Римский – Корсаков) (1967), I Have Travelled the Whole Universe (1969) [79], the part of Sobinin in Ivan Susanin (Life of the Tsar) opera by Glinka.
Listen to the songs performed by Nikolay Gres
Gres’ Wikipedia page can be found here.

[...] many, many singers in the choir — Belyaev, Leonid Kharitonov, Arthur Eizen, Nikolay Abramov, Nikolay Gres, and others — were in fact good enough to be international opera stars (Gres and Eizen were [...]