Andrew Lloyd Webber, creator of "Cats," "Phantom of the Opera" and "Evita," has another smash - even though it doesn't open for another four months. "Aspects of Love" already has sold $3.7 million worth of tickets in London, and that's more than the musical is costing to produce and even more than "Phantom" sold in a comparable period. Furthermore, all seats are sold for the first three months after the show's April 12 opening. Webber trumpeted the figures in announcing that Michael Ball, 26, who was in the London productions of both "Phantom of the Opera" and "Les Miserables," has been picked for the male lead in "Aspects."