That U.S.-hip-sounding line, strangely enough, is as British as “jolly good,” or “raw-ther.” It describes a musical fad that has washed over Britain. “Trad” is traditional jazz, the 1920s variety now ...

Frank Sinatra claims four spots on Billboard’s jazz charts this week, with two classic compilations returning and two more holding steady in the top 10. American singer and actor Frank Sinatra, ...