6 Things to do in Baltimore, Aug. 15-21

6 Things to do in Baltimore, Aug. 15-21

Take your pick of concerts: a queen of pop, a hit-making country band or a rising rapper, or choose a fundraiser for a museum or for pets, or gather round for scary tales aboard an old sailing ship. Friday: Katy Perry Getty ImagesShe rose to fame with “I Kissed A Girl” in 2008 … and we all liked it, so Katy Perry didn’t miss a beat and continued to top the charts with hits “Hot n Cold,” “Teenage Dream,” and “California Gurls.” (Getty Images) Don…