By Denny Dyroff, Entertainment Editor, The Times The Frontmen When The Frontmen take the stage at the American Music Theatre (2425 Lincoln Highway East, Lancaster, www.AMTshows.com) on June 17, the three singers will be bringing a lot of baggage with them – baggage in the combined total of more than 30 Number One hits, more than 30 million records sold and more than 50 Top 40 hits. The Frontmen features...