Mike Doughty is coming to terms with his past. His new memoir, The Book of Drugs, recalls his hazy days in the jazz/hip hop/spoken word/indie-rock thing called Soul Coughing, and now, after studiously avoiding that material for years, he’s revisiting the best of that band’s songs at Port City Music Hall (504 Congress St., Portland) at 8 p.m. Tix: $22-$25 (18+). 899-4990. portcitymusichall.com.