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Underground excitement
Four days of concerts start today
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A concert performance inside a cave takes more than a guitar. If it’s a performance for Bluegrass Underground at Cumberland Caverns, the list of equipment is substantial.“We’ll use eight cameras, 8,000 feet of fiber optic cable and 4 tons of electrical cable,” said producer Todd Jarrell. “We’ll have a crew of almost 60 people down there when we’re full strength.