Bestselling author and radio legend Garrison Keillor is joined by vocalist Heather Masse of the Wailin’ Jennys and pianist Richard Dworsky, who served as music director for Keillor’s “A Prairie Home Companion.” Love duets, tales from Keillor’s childhood, and audience singalongs abound in this gently rollicking show. Audience members will feel like they’ve been invited into the living room of three very talented friends.