LOS ANGELES (Reuters) - Grammy-nominated hip hop artist Nicki Minaj struggled to win over critics with her new found love of dance-pop music when her highly anticipated sophomore album "Pink Friday: Roman Reloaded" was released this week. Named after one of the rapper's many musical alter egos, Roman Zolanski, the album features 19 tracks that transition from the rapper's hip hop roots to her newfound love of pop-centered dance anthems. ...