Complex sentence: On September 24, Hendrix gave an impromptu solo performance at the Scotch-Club, and later that night he began a relationship with Kathy Etchingham that lasted until February 1969.
Split into simpler sentences: On September 24, Hendrix gave an impromptu solo performance at the Scotch-Club. That night, he began a relationship with Kathy Etchingham that lasted until February 1969.