Complex sentence: On May 13,2009, Sparks performed "Battlefield" on the "American Idol" top 3 results show, and was accompanied by Ryan Tedder who played the piano during her performance.
Split into simpler sentences: On May 13,2009, Sparks performed "Battlefield" on the "American Idol" top 3 results show. She was accompanied by Ryan Tedder who played the piano during her performance.