Amethyst Amelia Kelly (born 7 June 1990), better known by her stage name Iggy Azalea (/əˈzeɪljə/), is an Australian recording artist and model from Mullumbimby, New South Wales. She left for the United States at the age of 16, to pursue a career in hip hop music

Clifford Joseph Harris, Jr. (born September 25, 1980), better known by his stage name , and formerly , is an American rapper, record producer, actor and entrepreneur from Bankhead, Atlanta, Georgia

Katheryn Elizabeth "Katy" Hudson (born October 25, 1984), better known by her stage name Katy Perry, is an American singer, songwriter, and actress. She grew up in Santa Barbara, California.

Usher Raymond IV (born October 14, 1978), known mononymously as Usher, is an American singer, songwriter, dancer, philanthropist, entrepreneur, and actor. He rose to fame in the late 1990s