The Duluth Homegrown Music Festival brings out photographers in droves and at every show this week you'll see music fans pulling out their phones in dark barroom lighting to snap a pic of the band of the hour. It's such a tradition there is an annual photo show and a field guide full of these captured moments. Plus there is a lot of filming going on; enter Manny Villanueva. A photographer, videographer and former news cameraman; Villanueva has been working on a 20th Anniversary Homegrown