Aleksandrov reached the rank of Major-General and was awarded the order of Hero of Socialist Labour, the Lenin and Stalin Prize, and named People's Artist of the USSR.

[1] He began his musical career, aged 13, as a viola player and in the children's choir at the Bolshoi Theatre in Moscow, performing alongside singers such as Feodor Chaliapin.

From 1929 to 1937 he ran the music department of the newly established Central Theatre of the Red Army and from 1933 to 1941 was associate professor of Moscow Conservatory.

After World War II, the ensemble, led by Boris Aleksandrov, traveled abroad sixty-eight times and was well received in many countries throughout Europe.

In 1937 he wrote the operetta Wedding in Malinovka which contained patriotic themes: revolutionaries, soldiers, peasants and folk music.

Other operettas include The Girl from Barcelona (1942) about Russian partisans and a female Spanish co-combatant; My Gyuzel (1946), Near You (1949) and The One Hundred and First Wife (1957).

[1] Aleksandrov composed the song "Long Live Our State" (Да здравствует наша держава) to be the anthem of the Soviet Union.