Roots of G.E.M.

Christina María Aguilera is an American singer, songwriter, actress, and television personality. An influential figure in music, Aguilera is noted for her four-octave vocal range, melismatic singing style, use of the whistle register, and continual reinvention of her image and sound. Referred to as the "Voice of a Generation", she was ranked among the greatest singers of all time by Rolling Stone. Her works have incorporated socially conscious and sexual themes, generating both controversy and critical acclaim.