Complex sentence: He has been nominated for 2 Juno awards and has had multiple top 10 hits across Canada and the US most notably with his first song "Bondi Junction" which reached number one in the Canadian charts.
Split into simpler sentences: He has been nominated for 2 Juno awards and has had multiple top 10 hits across Canada and the US. His first song "Bondi Junction" reached the number one spot in the Canadian charts.