LaDonna Adrian Gaines, known by her stage name, Donna Sommer, later Donna Summer, was an American singer and songwriter who gained prominence during the disco era of the late 1970s. A five-time Grammy Award winner, she was the first artist to have three consecutive double albums reach #1 on the United States Billboard album chart and charted four number-one singles in the United States within a 13-month period. Summer has reportedly sold over 100 million records, making her one of the world's best-selling artists of all time. Born into a devoutly Christian middle-class family in Boston, Massachusetts, Summer first became involved with singing through church choir groups before joining a number of bands influenced by the Motown Sound. Also influenced by the counterculture of the 1960s, she became the front singer of a psychedelic rock band named Crow and moved to New York City. Joining a touring version of the musical Hair, she left New York and spent several years living, acting, and singing in West Germany, where she met music producer Giorgio Moroder. Also while in Europe, she married Helmut Sommer. After their divorce, she would keep his surname for her stage name; dropping the "o" and replacing it with a "u" for "Summer".