photo: nagi usano from tokyo, japan · cc by-sa 2.0 ↗Christina Aguilera broke through in 1999 as a Mickey Mouse Club alum with a four-octave voice built for melisma and belting, and spent the 2000s reinventing herself from bubblegum ingenue to sexually frank pop-soul provocateur on albums like Stripped. Her run of vocal showcases — 'Genie in a Bottle,' 'Beautiful,' 'Ain't No Other Man' — set a technical bar of runs, riffs, and whistle-register notes that a generation of pop vocalists measured themselves against. Rolling Stone has ranked her among the greatest singers of all time.
Aguilera has called Etta James a role model, saying James's 'At Last' made a major impression on her; critics later compared the raw power of Aguilera's 'Ain't No Other Man' vocal directly to James and Aretha Franklin.
listen forPut James's torchy, elastic phrasing on 'At Last' next to Aguilera's gritty belting on 'Ain't No Other Man' — both singers stretch a single word across several notes rather than singing it straight.
Aguilera has said she shaped her singing voice after Whitney Houston during her formative years, one of the two singers she has called her 'most apparent influences.'
listen forCompare Houston's soaring, technically pristine climb on 'I Wanna Dance with Somebody' to Aguilera's power-ballad delivery on 'I Turn to You' — both build from a controlled verse into a huge, clean belted chorus.
Aguilera has said she shaped her singing voice after Mariah Carey alongside Whitney Houston during her formative years, and both singers built early reputations on whistle-register vocal runs.
listen forListen to Carey vault into the whistle register on 'Vision of Love,' then hear Aguilera do the same on the soaring bridge of 'Reflection' — a similar showcase of extreme vocal range as a pop hook.