Complex sentence: Lil Hardin Armstrong (February 3,1898--August 27,1971) was a jazz pianist, composer, arranger, singer, and bandleader, and the second wife of Louis Armstrong, with whom she collaborated on many recordings in the 1920s.
Split into simpler sentences: Lil Hardin Armstrong (February 3,1898--August 27,1971) was a jazz pianist, composer, arranger, singer, and bandleader. She was the second wife of Louis Armstrong, with whom she collaborated on many recordings in the 1920s.