Jazz vocalist, musician, arranger and composer, Karrin Allyson (pronounced Cãr in) is one of those artists who can do it all. She can sing sassy, sensually, belt out a standard or coo a romantic love song. When she is not singing at the front of the stage, Allyson approaches the piano with the confident air, expectation, and professionalism that one has come to associate with other jazz greats, such as Diana Krall and Chick Corea. Allyson, who is fluent in French and sings beautifully in Port …