Complex sentence: Their most commercially successful album was "Bloodletting" (1990), fueled by the top 20 radio hit "Joey," which in turn inspired Sugarland's 2009 single of the same name.
Split into simpler sentences: Their most commercially successful album was "Bloodletting" (1990), which included their highest charting single, "Joey," which peaked at 20 on the Billboard charts. This in turn inspired Sugarland's 2009 single of the same name.