By Vernell Hackett NASHVILLE, Tennessee (Reuters) - Keith Urban had made eight albums over the past two decades when he began recording his latest, "Fuse," and the Australian country singer figured it was time to make some changes. "I just wanted to start in a place that was completely uncharted waters for me," the 45-year-old Grammy winner said in an interview ahead of the album's release on Tuesday. So Urban, the husband of Oscar-winning actress and fellow Australian Nicole Kidman, sought out a new group of songwriters and producers. ...