On "Last of the Great Singing Cowboys," you get an early glimpse into Rex"s versatile meldings of both kinds of music, country and western. There are fast-paced instrumental breakdowns, crooning, velvety ballads, smooth trio harmonies, and story songs. The crack backing band, full of accordion, fiddle, guitar, swinging standing up bass, and other sundry sounds, reflect what a hotbed of musical talent Chicago was immediately after World War II.