It's soundcheck time at the Capitol Theatre, just north of New York, and Dweezil Zappa is leading his band through the songs of his father, Frank. Dweezil, 46, has been regularly performing his dad's music for a decade, but his current tour is stranger – and more tense – than any before it. Unplugging his guitar, Dweezil looks out at the empty hall. "Sometimes peopl…
This article originally appeared on www.rollingstone.com: Inside the Zappa Family Feud