Celtic band Switchback, Martin McCormack and Brian FitzGerald, will be in Columbus for two concerts this weekend, June 13 and 14: Friday night at Hoover House Concerts (contact Nancy Tomei at 740-965-3935 for tickets) and Saturday night at Hey, Hey Bar and Grill. Brian filled me in on songwriting, Celtic music, and how my cruelty as a writing teacher was ruining students.