Just in time for St. Patrick's Day, the Reagle Players return with their 18th annual festival A Little Bit of Ireland, a celebration of all things Irish. A Little Bit of Ireland contains a wee dram of Irish tenors, a little bit of Riverdancing, a rousing pub visit, a twinkle of Celtic comedy and, of course, festive songs such as "Danny Boy," "If You're Irish, Come Into the Parlor," "I'll Take You Home Again, Kathleen" and more. A cast of dozens and a live orchestra round out this Emerald Isle homage at Reagle Music Theatre in Waltham. It's pure Celtic magic.