prize17-7, Exercise 1: Cool jazz and hard bop

Model answer (check the details):

Cool jazz is relaxed and restrained, with soft tones, more written arrangement and blended textures; its usual starting point is the Miles Davis nonet recordings of 1949 and 1950. Hard bop is urgent and earthy, built on a driving rhythm, with bluesy, gospel-flavoured melodies and long solos after a short theme; its usual leaders are Art Blakey and Horace Silver.

The sequence "bebop, then cool, then hard bop" is only a map because the styles overlapped in time, shared players and venues, and drew on the same sources (blues, gospel, European devices). The Davis nonet recorded in 1949, while some writers date the first hard bop to Davis's own recordings of 1952 to 1954, so even the dividing lines are disputed.

Care: critics' labels describe tendencies, not walls. Say "tended to" rather than "was".