Nagachevsky was born in 1890 (other sources state 1895) in Tsibirika in the region of Kalorash
He studied at the seminary in Kishinev (Chisinau). During this period, he sang in the choir
of an opera company visiting Kishinev.
He studied singing at the Moscow Conservatory in the class of V. Zarudnoï finishing in 1917.
Starting in 1917 Nagachevsky sang with the B. Byelousovoï Company in Kishinev, becoming its manager
in 1919. Later he joined the Cluj Opera.
In 1925, Nagachevsky toured in Kishinev (Chisinau), in some productions he performed with L. Lipkovskaya. He made his
debut as producer with Yevgenyi Onyegin.
Then he sang in Vienna (Volksoper); in 1928 in Kishinev at the Ekspress Opera,
where he also produced Faust.
In 1929, he graduated from the Bucharest Conservatory.
In the same year, he was invited to Belgrade, where he sang Pinkerton.
In December 1930, he sang with the Russian Opera in Paris (Théâtre des Champs Elysées) with F. Shalyapin
in Sadko (The Indian guest), and Prince Igor (Vladimir Igoryevich).
As member of this company, he toured the major cities of France, Italy and Spain.
In Paris, Nagachevsky organized a vocal quartet, performing mostly during the summer in the cities of France. In 1934 he toured Switzerland,
in the winter of that year he sang again at the Cluj opera.
His repertory contained: Lensky, Berendaï, Faust, Almaviva, Alfredo, Cavaradossi, the Indian Guest, Vladimir, Pinkerton, ...
His partners included: Ya. Gorskiy, Z. Efimovskaya, M. Zhitovskiy, L. Korotnev, N. Lavretskiy, A. Oksanskiy, E. Svirskaya, G.
Yurenev, A. E. Yakovlev, ...
Nagachevcky was also a well-known chamber singer. His repertory included works by:
F. Schubert. J. Rossini, W. A. Mozart, P. Tschaikovsky, S. V. Rachmaninoff, R. M. Glier.
In Vienna together with Ya. Gorskiy, he gave concert, with Spanish and Russian works.
During 1940-41, he was the head of vocal department at the Kishinev Conservatory.