FOR POP STAR ENYA, THE PROOF IS IN THE LISTENING.(ARTS)

Byline: J.D. CONSIDINE The Baltimore Sun

NEW YORK -- Like many musicians, Enya loves being on the road. Traveling brings out the observer in her, allowing her to note differences among people and places, countries and cultures. It is, she says, endlessly fascinating. ``I never seem to get tired of it. There's always something new.''

But she doesn't quite see the world the way other musicians of her stature would. At 36, she is the second-biggest pop act in Ireland, having sold more than 25 million albums worldwide. Of Irish pop acts, only U2 tops her in sales and success.

But unlike U2, Enya never has toured. In fact, she was for a while the world's most anonymous superstar, a performer whose music -- a one-of-a-kind sound drawing heavily on classical and Celtic traditions -- …