commenting, "She is first and foremost a pop diva – at that, the best one we have. No other female pop star – not Mariah Carey, not Celine Dion, not Barbra Streisand – quite rivals Houston in her exquisite vocal fluidity and purity of tone and her ability to infuse a lyric with mesmerizing melodrama." Singer Faith Evans stated: "Whitney wasn't just a singer with a beautiful voice. She was a true musician. Her voice was an instrument and she knew how to use it. With the same complexity as someone who has mastered the violin or the piano, Whitney mastered the use of her voice. From every run to every crescendo—she was in tune with what she could do with her voice and it's not something simple for a singer—even a very talented one—to achieve. Whitney is 'the Voice' because she worked for it. This is someone who was singing backup for her mom when she was 14 years old at nightclubs across the country. This is someone who sang backup for Chaka Khan when she was only 17. She had years and years of honing her craft on stage and in the studio before she ever got signed to a record label. Coming from a family of singers and surrounded by music; she pretty much had a formal education in music, just like someone who might attend a performing arts high school or major in voice in college." Jon Caramanica of The New York Times commented, "Her voice was clean and strong, with barely any grit, well suited to the songs of love and aspiration. [ ... ] Hers was a voice of triumph and achievement and it made for any number of stunning, time-stopping vocal performances." Mariah Carey stated, "She [Whitney] has a really rich, strong mid-belt that very few people have. She sounds really good, really strong." While in her review of I Look to You, music critic Ann Powers of the Los Angeles Times writes, "[Houston's voice] stands like monuments upon the landscape of 20th century pop, defining the architecture of their times, sheltering the dreams of millions and inspiring the climbing careers of countless imitators", adding "When she was at her best, nothing could match her huge, clean, cool mezzo-soprano." Lauren Everitt from BBC News commented on melisma used in Houston's recording and its influence. "An early 'I' in Whitney Houston's 'I Will Always