HAVE A NICE DAYIn the five years between Roxette's last album, Crash, Boom, Bang, and this, their "comeback" album, pop music had changed considerably. Crash, Boom, Bang failed, in part, because it was completely out of step with the times; in 1994 grunge, alternative, and rap ruled the charts, but Roxette always produced a relatively crisp and clean brand of pop rock. In the five years since then, however, Brit pop brought alternative rock back towards pop,