Complex sentence: At her first audition, O'Hara was simply instructed to "sing something that you love," deciding upon the song "Heaven Help My Heart" from the Broadway musical "Chess", which impressed the judges.
Split into simpler sentences: At her first audition, O'Hara was simply instructed to "sing something that you love". She decided upon the song "Heaven Help My Heart" from the Broadway musical "Chess", which impressed the judges.