Complex sentence: On March 28,2012, Jessica Sanchez, a contestant of the eleventh season of "American Idol", covered "Sweet Dreams" performing a slow-tempo ballad version of the song accompanied at the beginning by harps.
Split into simpler sentences: On March 28,2012, Jessica Sanchez, a contestant of the eleventh season of "American Idol", covered "Sweet Dreams". She performed a slow-tempo ballad version of the song accompanied at the beginning by harps.