Carey was born in Huntington, Long Island, New York. She is the third and youngest child of Patricia Carey (née Hickey), a former opera singer and vocal coach, and Alfred Roy Carey, an aeronautical engineer. Her mother was Irish American and her father was of Afro-Venezuelan and African American descent; her paternal grandfather, Roberto Nuñez, changed his surname to Carey to better assimilate upon moving to the United States from Venezuela. Carey graduated from Harborfields High School in Greenlawn, New York. Eventually, she became a backup singer for Puerto Rican freestyle singer Brenda K. Starr. Carey co-wrote the tracks on her 1990 debut album Mariah Carey, and she has co-written most of her material since. Carey conceived Emotions, her second album, as an homage to Motown soul music (see Motown Sound), and she worked with Walter Afanasieff and Clivillés & Cole (from the dance group C+C Music Factory) on the record. It was released soon after her debut album—in late 1991—but was neither as critically or commercially successful. Kenneth "Babyface" Edmonds consulted on the album Music Box, which was released later that year and became Carey's most successful worldwide. The album maintained a presence on the Billboard 200 for a staggering 128 weeks. It yielded her first UK Singles Chart number-one, a cover of Badfinger's "Without You", and the U.S. number-ones "Dreamlover" and "Hero". Billboard magazine proclaimed it "heart-piercing.. easily the most elemental of Carey's releases, her vocal eurythmics in natural sync with the songs", but TIME magazine lamented Carey's attempt at a mellower work, "[Music Box] seems perfunctory and almost passionless [...] Carey could be a pop-soul great; instead she has once again settled for Salieri-like mediocrity." Critics panned Glitter, Carey's much delayed semi-autobiographical film, and it was a box office failure. The accompanying soundtrack album, Glitter, was inspired by the music of the 1980s and featured collaborations with Rick James and Jimmy Jam and Terry Lewis; it generated Carey's worst showing on the U.S. chart. Love is the subject of the majority of Carey's lyrics, although she has written about themes such as racism, social alienation, death, world hunger, and spirituality. She has said that much of her work is partly autobiographical, but TIME magazine wrote: "If only Mariah Carey's music had the drama of her life. Her songs are often sugary and artificial—NutraSweet soul. But her life has passion and conflict." The Village Voice wrote in 2001 that, in that respect, Carey compared unfavorably with singers such as Mary J. Blige, saying "Carey's Strawberry Shortcake soul still provides the template with which teen-pop cuties draw curlicues around those centerless [Diane] Warren ballads [...] it's largely because of [Blige] that the new r&b demands a greater range of emotional expression, smarter poetry, more from-the-gut testifying, and less unnecessary notes than the squeaky-clean and just plain squeaky Mariah era. Nowadays it's the Christina Aguileras and Jessica Simpsons who awkwardly oversing, while the women with roof-raising lung power keep it in check when tune or lyric demands." Carey's output makes use of electronic instruments such as drum machines, keyboards and synthesizers. Many of her songs contain piano music, and she was given piano lessons when she was six years old. Carey said that she cannot read sheet music and prefers to collaborate with a pianist when composing her material, but feels that it is easier to experiment with faster and less conventional melodies and chord progressions using this technique.