Complex sentence: Dean Ellis Kohler is an American rock musician from Portsmouth, Virgina who began playing in 1962 as the leader of Dean & the Mustangs, who later changed their name and recorded two demos as the Satellites.
Split into simpler sentences: Dean Ellis Kohler is an American rock musician from Portsmouth, Virgina who has been active in various groups and as a solo artist since 1962. That year he formed Dean & the Mustangs, who later changed their name and recorded demos as the Satellites.