From country music to rhythm and blues, Robin McKelle has made an entire career exploring the rich vastness of American music. With Impressions of Ella, McKelle returns to her traditional jazz roots and finds herself right at home.Introducing Robin McKelle, her eponymous 2006 debut, delved into a dozen timeless standards of the swing era (Come Rain or Come Shine, Night and Day, On the Sunny Side of the Street). For her latest effort, McKelle draws from only one source and perhaps her greatest ar...