Complex sentence: His many recordings made on the RCA Victor and Capitol labels in the 1950s and 1960s have been re-mastered and re-released on compact disc in recent years, and continue to be widely available in mainstream music stores.
Split into simpler sentences: His many recordings made on the RCA Victor and Capitol labels, mostly in the 1950s and 1960s, have been re-mastered and re-released on compact disc in recent years. They continue to be widely available in mainstream music stores.