Martynov lived in Moscow and worked first at the State Concert Association as a vocalist, and then at the publishing houses "Young Guard" and "Pravda" as a musical editor-consultant.

In 1978 he played the role of a romance singer in Oleg Biyma's musical Just a Fairy Tale... [ru].

[5] In his work, Martynov used the most successful lyrical or civic poems by Ilya Reznik, Andrey Dementyev, Robert Rozhdestvensky, Mikhail Plyatskovsky and other outstanding Soviet poets.

Martynov's songs were performed by prominent Soviet singers of the 1970s and 1980s, such as Sofia Rotaru, Iosif Kobzon, Anna German, Vadim Mulerman, Aleksander Serov, Georgy Minasyan, Maria Codreanu, Mikhail Chuev, Eduard Khil and others.

After Martynov's death, some of his songs were sung and recorded by Yulian, Nikolai Baskov, Philipp Kirkorov, Ani Lorak, and Tina Karol, among others.