The Miles Davis Quintet, in 1956, were maybe the best and most accomplished young group in jazz. And the quartet of albums that they recorded on 2 days that year (Cookin', Steamin', Relaxin', and this title, Workin') are some of the most famous and timeless jazz recordings in history. They recorded this heavily over the course of 2 days to satisfy contractual obligations, but you wouldn't know it by hearing the recordings. Davis, Coltrane, Garland, Chambers, and Jones are a seamless and incredibly cohesive group, playing off each other perfectly, and it's somewhat shocking to know that they only existed in this particular incarnation for less than 3 years.