: The work appears to be a curriculum, textbook, or collection of musical scores intended for theatrical and contemporary music education.

: Specifically focusing on vocal performance or choral arrangements.

Since this file is part of a university repository (likely M. Auezov South Kazakhstan University), the contents are generally restricted to faculty and students of that institution.

The specific "piece" or subject matter contained within this file relates to:

Based on academic library records from Alma-Mater - Library , the file is an archival record associated with a 2020 musical or educational work by D.A. Musakulova and E.A. Mekenbaeva .