Ella Fitzgerald — vocals Louis Armstrong — vocals; trumpet on "Summertime," "I Got Plenty o' Nuttin'," "It Ain't Necessarily So," "A Woman Is a Sometime Thing," and "There's a Boat Dat's Leavin' Soon for New York" Russell Garcia – arranger, conductor Victor Arno, Robert Barene, Jacques Gasselin, Joseph Livoti, Dan Lube, Amerigo Marino, Erno Neufeld, Marshall Sosson, Robert Sushel, Gerald Vinci, Tibor Zelig — violins Myron Bacon, Abraham Hochstein, Raymond Menhennick, Myron Sandler — violas Justin Di Tullio, Kurt Reher, William Van Den Burg — cellos Frank Beach, Buddy Childers, Cappy Lewis — trumpets Milt Bernhart, Marshall Cram, James Henderson, Lloyd Ulyate — trombones Vincent DeRosa – French horn Bill Miller, Paul Smith – piano Tony Rizzi – guitar Joe Mondragon – double bass Alvin Stoller – drums