Once you manage to obtain a clean score (either via purchase or a fleeting IMSLP typeset), you will immediately notice three terrifying details:
The International Music Score Library Project (IMSLP) is a digital library that provides access to a vast collection of public domain and Creative Commons-licensed music scores. Founded in 2006, IMSLP has grown to become one of the largest online music libraries, with over 500,000 scores available for download. For those interested in exploring Kapustin's Concert Etudes, IMSLP offers a comprehensive collection of scores, including: kapustin concert etudes imslp
Go to IMSLP.org and search “Kapustin, Nikolai.” You will find a composer page listing his major works. Click on . Once you manage to obtain a clean score