Complex sentence: Shakira headlined a concert at the stadium on April 10,2011 and the American rock band Pearl Jam are scheduled to play at the stadium on November 20,2011, as part of their 20th anniversary tour.
Split into simpler sentences: Shakira headlined a concert at the stadium on April 10,2011. The American rock band Pearl Jam played at the stadium on November 20,2011, as part of their 20th anniversary tour.