Four Days in December

Four Days in December
Poster advertising Four Days in December
GenreJazz, Free jazz
DatesDecember 28–31, 1964
Location(s)165 West 57th Street, New York City
Years active1964
FoundersJazz Composers Guild
Attendance750

Four Days in December (also listed as 4 Days in December) was a four-day festival of new jazz music that took place at Judson Hall in New York City. Sponsored by the Jazz Composers Guild, it occurred from December 28–31, 1964, and was the group's most visible event. Along with the October Revolution in Jazz, held two months prior and organized by Bill Dixon, it led to a sense of optimism regarding the possibility of producing concerts via non-traditional means.