Cher is an American singer and actress. Recognized for having brought the sense of female autonomy and self-actualization into the entertainment industry, she is known for her distinctive contralto singing voice and for having worked in various areas of entertainment, as well as continuously reinventing both her music and image, which has led to her being nicknamed the Goddess of Pop. Cher became prominent in 1965 as one-half of the folk rock husband–wife duo Sonny & Cher, who popularized a particular smooth sound that successfully competed with the dominant British Invasion and Motown sounds of the era. From 1965, she had established herself as a solo artist with successful singles such as "Bang Bang", "Gypsys, Tramps & Thieves", "Half-Breed", and "Dark Lady", songs that deal with subjects rarely addressed in American popular music. Goldmine magazine's Phill Marder described her as the leader of an effort in the 1960s to "advance feminine rebellion in the rock world [and] the prototype of the female rock star, setting the standard for appearance [and] attitude". After the duo's drug-free lifestyle had lost its popular appeal in the United States owing to the drug culture of the 1960s, she returned to stardom in the 1970s as a television personality with her shows The Sonny & Cher Comedy Hour and Cher, both of which attained immense popularity. She became a fashion trendsetter with her daring outfits. After Cher and Sonny divorced in 1975, Cher experimented with various musical styles, including disco and new wave, before becoming a successful live act in Las Vegas.