When public TV asks its viewers annually for funding to keep its shows on the air, it helps to put a little Irish cream on top. The sweet and majestic song of Celtic Woman is a staple of the pledge drive, one that many fans look forward to every time. The all-woman musical ensemble of Irish musicians and singers makes a stop in Oklahoma during this year’s big tour, which takes singers Chloë Agnew, Lisa Lambe and Susan McFadden along with lighter-than-air fiddler Máiréad Nesbitt all across the continent and Europe, too. Singing plenty of Celtic traditional pieces, the ensemble also throws in a good portion of contemporary work. To us, every bit is magic. The show is scheduled for 7:30 p.m. Thursday, May 16, at Oklahoma Civic Center Music Hall’s Thelma E. Gaylord Performing Arts Theatre, 201 N. Walker Ave. Tickets are $36-$69 each, available at the box office and online at www.okcciviccenter.com.