1940s in music

For music from an individual year in the 1940s, go to 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 In the developed world, swing, big band, jazz, Latin and country music dominated and defined the popular music of the 1940s. After World War II, the big band sounds of the earlier part of the decade had been gradually replaced by crooners and vocal pop.