Complex sentence: Tracy Nelson, who sang backup on Harvey's recording, performed "Delta Dawn" in her live act and after hearing Nelson sing "Delta Dawn" at the Bottom Line in New York City Bette Midler added the song to her repertoire.
Split into simpler sentences: Tracy Nelson, who sang backup on Harvey's recording, performed "Delta Dawn" in her live act. After hearing Nelson sing "Delta Dawn" at the Bottom Line in New York City, Bette Midler added the song to her repertoire.