LOS ANGELES (Reuters) - Disco queen Donna Summer, whose sultry voice and pulsing rhythms on hits like "Last Dance" and "Love to Love You Baby" defined the 1970s disco era, died of cancer on Thursday at age 63. Summer, who won five Grammys and sold more than 130 million records worldwide, died surrounded by her family in Naples, Florida, publicist Brian Edwards said. He declined to specify what type of cancer caused her death. "Early this morning, surrounded by family, we lost Donna Summer Sudano, a woman of many gifts, the greatest being her faith. ...