For years, the Roundup Open Mic has produced live music and a radio show from The Hayloft Inn, west of Traverse City. There's a new act at The Hayloft. Mike Campbell is known as Digger and says he learned music in the school of hard knocks. During Interlochen's Transom workshop, Jen Altschul (producer of The Dirtbag Diaries) visited Digger and prepared this story.