51动漫

The word 鈥渃ool鈥� goes back to the hip vocabulary of the 1940s, when it was
used to distinguish a type of modern jazz from the 鈥渉ot鈥� music of the 1920s. The
defining moment was The Birth of the Cool recordings of 1949 and 1950
(http://tychonic.antioch.edu/~michael/cooljazz/intro.html). The songs were
originally issued on 78s鈥攖hings your grandparents played on gramophones in
the days before LPs.