The song mentioned in this context is often one that represents complete surrender to the Creator, a tune that connects the "Great Above" with the "Great Below".
Based on the phrase "tova_e_edna_ot_nai_hubavite_pesni_za_boga_ot_br..." (Bulgarian for "This is one of the most beautiful songs for God by Br..."), this likely refers to a story or melody associated with the (often abbreviated as Br... in Bulgarian transliteration or referencing a "Brother" or "Brotherhood" context), a historical figure who often taught through stories and joyful melodies. tova_e_edna_ot_nai_hubavite_pesni_za_boga_ot_br...
While the partial quote could refer to a specific niggun (melody) passed down, it is fundamentally tied to the Baal Shem Tov's philosophy that a simple, beautiful song is one of the most powerful prayers to God. Listening to the Dark: The Descent of the Goddess Inanna The song mentioned in this context is often