THEY no longer come in chartered busloads, toting rickety guitars, nosing around for nirvana. The second generation is here; smaller, perhaps, but with a distinct qualitative change. They're equally smitten by the India bug, but it's aesthetic salvation that they want--not just a few sitar strains to decorate their hit singles back home. "People are getting tired of the West and searching for fresh forms which are equally deep-rooted and challenging," says Japanese Bharatanatyam dancer Kats Sukasawa. Still spouting the same lines, but the focus is on form, not mystique. And the bottom line has altered: they aim to be serious practitioners of Indian art forms.