Their "Kashchey the Immortal" (Кащей Бессмертный) rock opera is the most famous example of a musical, profane fairy tale.
A good place to find older, "abandonware" style collections from the early 2000s internet era. A Note on Safety maternye skazki mp3 skachat besplatno
Many creators upload "audiobooks" of these stories. You can use browser extensions or safe conversion tools if you need them in MP3 format for offline listening. maternye skazki mp3 skachat besplatno
Since these files are often shared as user-generated content, you can find them on these platforms: maternye skazki mp3 skachat besplatno
Various amateur voice actors (often found on YouTube or VK) who dub classic cartoons with modern slang and profanity. Where to Find & Listen
Sites offering free MP3 downloads are often "link farms" with intrusive ads and potential malware.