Summer is approaching, slow though it may seem, and concert junkies need to begin filling in their 2011 summer itineraries. Our good friends in Wisconsin are helping get a jump on this planning as Lake Superior Big Top Chautauqua has announced its initial summer performers.

See the full list here. Highlights include Greg Brown, Arlo Guthrie, Dar Williams, Nanci Griffith, and many more. The clincher for me is a two-night stand from folk legend John Prine on Aug. 20-21. A trip to Wisconsin may be in order.