Complex sentence: According to Dupree, the most difficult of the two record-breaking events was performing 21 shows in 24 hours; wth full production, lighting and sound, Jackyl completed the task in the State of Texas.
Split into simpler sentences: According to Dupree, the most difficult of the two record-breaking events was performing 21 shows in 24 hours. With full production, lighting and sound, Jackyl completed the task in the State of Texas.