Complex sentence: Kesarbai, who was visiting Champanagar for a performance was so enthused by his rendition of "Dwarikanath Sharan Me Teri" that she insisted politely that he teach the song to her.
Split into simpler sentences: Kesarbai, who was visiting Champanagar for a performance. She was so enthused by his rendition of "Dwarikanath Sharan Me Teri" that she insisted politely that he teach the song to her.