Sy Oliver's melodic yet sophisticated arrangements helped define the Jimmy Lunceford sound in the 1930s and modernized Tommy Dorsey's band in the '40s. A fine trumpeter (excellent with a mute) and a likable vocalist, Oliver made his recording debut with Zack Whyte's Chocolate Beau Brummels in the late '20s and also worked with Alphonse Trent. Joining Lunceford in 1933, Oliver was responsible for such memorable charts as "My Blue Heaven," "Ain't She Sweet," "Organ Grinder's Swing," and "'Tain't What You Do," among many others. It was a major blow to Lunceford when Oliver jumped...