trad
noun /træd/
/træd/
(also less frequent trad jazz)
(both British English) [uncountable]- traditional jazz in the style of the 1920s, with free playing (= improvisation) against a background of fixed rhythms and combinations of notes
see also Dixieland传统爵士乐(有 20 世纪 20 年代的风格、固定的节奏及和声,可即兴发挥) 词源1950s: abbreviation.