IT'S a rapidly expanding canvas awash with the colour of money. Swelling, upwardly mobile audiences, drawn by the strong urge to acquire the trappings of good taste, are streaming into art galleries and concert halls. Corporate promoters are throwing their weight behind the popularisation of pure culture. The stage is all set for a dramatic revolution. The world of high art—a rarefied realm hitherto peopled exclusively by the nation's most creative souls, living and working in splendid isolation—has zoomed into the era of hardsell.