Complex sentence: From December 1976, Thorpe continued his musical career in the US, by 1979 he released his solo space opera, "Children of the Sun", which peaked into the top 40 of the "Billboard" Pop Album chart, and top 50 in Australia.
Split into simpler sentences: From December 1976, Thorpe continued his musical career in the US. By 1979 he released his solo space opera, "Children of the Sun", which peaked into the top 40 of the "Billboard" Pop Album chart, and top 50 in Australia.