By Denny Dyroff, Entertainment Editor, The Times The Barr Brothers Three music acts with international vibes in their DNA will be playing shows in the area on March 22 and 23 – the Barr Brothers on Friday and Francesca Blanchard and Ranky Tanky on March 23. The Barr Brothers will headline a show at the World Café Live (3025 Walnut Street, Philadelphia, 215-222-1400, www.worldcafelive.com) with La...