Par ADAMS SALLY. The Roaring Twenties and Thirties - a lost world of opulence and excess, of champagne parties lasting until dawn, where flappers and their partners danced to the vibrant new music of the latest jazz bands. 'Play Jazztime' presents a selection of world-famous hits from this brilliant, brittle era - from the seductive melodies of Gershwin to the archetypal Twenties hit 'Charleston'.…