To get the most out of these materials, it is best to treat them as a "teacher's guide" rather than a simple answer sheet. Using the audio supplements (often available via QR codes in the books) alongside the GDZ allows students to connect the visual "answer" with the actual sound, which is the core goal of Pervozvanskaya’s methodology.

: Later grades introduce harmonic analysis and accompaniment, where seeing a solved example helps students understand how to "collect" notes into chords. Where to Find Assistance

: Many parents use these keys to ensure their children are correctly building intervals, scales, and chords, such as the major and minor triads taught in the 3rd and 4th grades.

Pervozvanskaya's "World of Music" (Мир музыки) and "Solfeggio to Five" (Сольфеджио на пять) series are known for their creative, non-traditional approach, often using games and illustrations to teach complex theory. Because the material can be dense for young students or parents without a musical background, GDZ serves several purposes:

: Students can identify patterns in their errors—such as forgetting sharp or flat signs—by comparing their work with completed versions of the Solfezhio na pyat workbooks .

: Platforms like VKontakte host groups where students and parents share photos of completed assignments for peer review.