Complex sentence: She performed "C.O.B.R.A, Jamais Ailleurs" and "Heart Attack" during the Canada Day celebrations in Ottawa on 1 July 2013 and on July 22, participated in the benefit concert for the victims in Lavaltrie Lake Megantic with 39 other artists.
Split into simpler sentences: She performed "C.O.B.R.A.", "Jamais ailleurs" and "Heart Attack" during the Canada Day celebrations in Ottawa on July 1,2013. On July 22, she featured in the benefit concert for the victims of Lac-Mégantic in Lavaltrie, along with 39 other artists.