Complex sentence: At the age of thirteen he had a high school band called Over the Top, and less than two years after graduating from high school, he formed a band called Masonia with Daniel Rivers, Mo Bloomfield and Nathan Meryment.
Split into simpler sentences: At the age of thirteen he had a high school band called Over the Top. Less than two years after Childs graduated from high school, he formed a band called Masonia with founding members Daniel Rivers, Mo Bloomfield and Nathan Meryment.