Prince Back In Spotlight With 'Lovesexy' Tour LOS ANGELES DAILY NEWS LOS ANGELES Coming hot on the heels of his breakthrough film of the same name, Prince's "Purple Rain" tour was one of the most anticipated events of the 1985-86 concert season. Yet many observers felt that Purple Rain" generated less excitement than expected. Some critics commented on the murkiness of the sound system, the clumsiness of the show's pacing and the singer's neurotic costume changes. For some re