WE caught up with Canto-pop king Aaron Kwok (above) yesterday who was having a respite from his usual crooning about unrequited love to sing the praises of Coca Cola. Teeny heart-throb Kwok will be rendering the theme tune in both Cantonese and Mandarin for the cola giant's new jingle, which the company hopes will ''delight the millions of consumers in the greater China region''. The last time we came across Kwok in similar circumstances he was standing alongside a bus appearing in a transport company's anti-smoking campaign. This was somewhat puzzling seeing as the pop star's recording career was sponsored partly by a tobacco company. But at the Kowloon Shangri-La's Magnolia Room yesterday there were no such doubts. Unless, of course, young Aaron quenches his after-concert thirst with something other than the real thing.