Oliver Nelson was one of the more distinctive arrangers to be active in jazz, the studios, and popular music of the '60s. While most Nelson reissues focus on his always-excellent saxophone playing (whether on tenor or alto), this six-CD set, Argo, Verve and Impulse Big Band Studio Sessions, focuses on Oliver Nelson the arranger-composer-bandleader. He does take solos on some of these dates on tenor, alto,and soprano (his only recorded solos on that instrument), but it his writing that takes center stage.