Johnston, who plays with The Rogan Brothers band, said the perils of putting together a music festival are enormous, “like invading Normandy, when nothing goes right.”  He was impressed that short, 30-minute-or-so sets were moving along rapidly and organizers seemed to have pulled it off with aplomb.“Charlottesville needs this,” said Johnston, standing near the beer truck and wearing a green velvet shirt and black cowboy hat, beer in hand.  Several musicians said there is no similar venue or festival in the area and the event fills a void.“All these local bands need to have an outlet like this,” Johnston said….  Young rock bands are coming out of the woodwork, he said.That the thing happened at all makes it an unqualified success.