This paper presents the new evidence that confirms the influence of A.V.Zataevich (direct and mediated) on the work of composers in the genre of opera in Kazakhstan. Relying on the support of various sources, mainly inaccessible and/or forgotten, there is shown the true scale of the use of song and instrumental samples of his musical and ethnographic collections of the «1000 songs of the Kyrgyz people (tunes and melodies)» (1925), «500 Kazakh songs and kuy…» (1931) and piano transcriptions (treatments) that are created in parallel with the collecting activity. In this regard for the first time the variety of forms and results which are opening a real contribution of A.V.Zataevich in the development of the Kazakh opera art is designated., Keywords: сhant, song, folklore, quote, tradition, composer, opera, plot, globalization.