By Denny Dyroff, Entertainment Editor, The Times Sons of Cream It is often said that the ability to make music is in a person’s genes. This weekend, Malcolm Bruce and Kofi Baker will come to the area for a much-anticipated show at the Sellersville Theater (24 West Temple Avenue, Sellersville, 215-257-5808, www.st94.com) and music is definitely in their genes The British bassist and drummer are...