Complex sentence: She had also performed the song at Layton's 1988 wedding to Olivia Chow; the original recording was also used as the opening theme music to the 2013 CBC Television film "Jack".
Split into simpler sentences: She had also performed the song at Layton's 1988 wedding to Olivia Chow. The original recording was also used as the opening theme music to the 2013 CBC Television film "Jack".