The Rascals were widely regarded as the finest blue-eyed soul group of the 1960s, a statement that's accurate without fully defining their importance or the breadth of their abilities. At their best, the Rascals fused the soulful passion of R&B, the tough, swaggering sound of garage rock, the chops of a top-notch show band, and a sense of musical adventure that borrowed from pop, jazz, funk, gospel, and world music. Beginning as the Young Rascals, they were a band of brash upstarts from the East Coast who on their debut album merged rock and soul with a skill and feel that was...