Get ready to travel back to a nighttime world where the cocktails were chilled, the company was warm and welcoming, and the music was as hip and swinging as it could be. Frank Sinatra, Bobby Darin, Julie London, and Sarah Vaughan are just a few of the musical legends who set the tone for a neon-lit era with performances that combined wit, finesse, and an unflappable kind of cool. Meanwhile, jazz greats like Dave Brubeck ensured the rhythms stayed hot. And while the sound’s golden age coincided with the glory years of Sinatra and his Rat Pack in the ‘50s and early ‘60s, it resurged in the ‘90s thanks to the efforts of Combustible Edison, Air, and others who gave a contemporary spin to music made for feeling swanky.