Arranger Howard Alden, cornetist Warren Vaché, guitarist Bucky Pizzarelli, et al. give Bobby Short his finest showcase in years, on Songs of New York Live at the Cafe Carlyle. The instrumental backing (whether delicately shaded on ''Penthouse Serenade'' or infectiously swinging on ''Upper Madison Avenue Blues'') is no less intriguing than Short's high-style singing.

