Who doesn't enjoy twilight excursions to jazz clubs First, there&rsquos the soft lighting. Mellow strains of the saxophone, cut with the energy of trumpets. Impromptu scatting as the band feeds off each others&rsquo energy. And unless you&rsquore a modern-day Hemingway, an ever-flowing arrangement of cocktails sans the discord of drunken brawls. Despite the many positives, I do find myself missing a piece of the puzzle with every visit. But after leafing through the hundred odd pages of The Jazz Bug, I&rsquove figured out what it is&mdashcontext.