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the rock concert that some say is too big. deborah villalon has the story. >> reporter: and too loud. during the bottle rock festival they'll be jamming from noon to 10:00 at night. >> that's where zack brown and the kings of leon. >> reporter: it was easy to get headliners to agree to come play in napa. but winning over residents a different tune. >> it might blow up in their faces and they could have five days of crisis management. >> yeah this is we're breaking new ground here so there's a little bit of trepidation like what is it going to be? >> reporter: it's going to be napa's ...

during the bottle rock festival they'll be jamming from noon to 10:00 at night. >> that's where zack brown and the kings of leon. >> reporter: it was easy to get headliners to agree to come play in napa. but winning over residents a different tune. >> it might blow up in their faces and they could have five days of crisis management. >> yeah this is we're breaking new ground here so there's a little bit of trepidation like what is it going to be? >> reporter: it's going to be napa's biggest event ever. 60 bounds in three days tucked into the complex downtown. food and wine all local....