Greatest Love of All", originally recorded by George Benson in 1977), became Houston's biggest hit yet; the single peaked at number one and remained there for three weeks, making Houston's debut the first album by a woman to yield three number-one hits. Houston ended 1986 as the top artist of the year while her debut album topped the Billboard Year-End chart, making her the first woman to earn that distinction. At the time, the album was the bestselling debut album by a solo artist. The album would later be certified 14× platinum for sales of 14 million units alone in the United States, while selling over 22 million copies worldwide. In July 1986, Houston launched her first world tour, The Greatest Love World Tour, where she performed mainly in North America, Europe, Australia and Japan. The tour lasted into December, ending in Hawaii. At the 1986 Grammy Awards, Houston was nominated for three awards, including Album of the Year. She was not eligible for the Best New Artist category because of her previous hit R&B duet recording with Teddy Pendergrass in 1984. She won her first Grammy Award for Best Female Pop Vocal Performance for "Saving All My Love for You". Houston's performance of the song during the Grammy telecast later earned her an Emmy Award for Outstanding Individual Performance in a Variety or Music Program. Houston won seven American Music Awards in total in 1986 and 1987 and an MTV Video Music Award. The album's popularity would also carry over to the 1987 Grammy Awards, when "Greatest Love of All" would receive a Record of the Year nomination. Houston's debut album is listed as one of Rolling Stones 500 Greatest Albums of All Time and on the Rock and Roll Hall of Fame's Definitive 200 list. Houston's grand entrance into the music industry is considered one of the 25 musical milestones of the last 25 years, according to USA Today. Following Houston's success, doors were opened for other African-American women such as Janet Jackson and Anita Baker. 1987–1991: Whitney, I'm Your Baby Tonight and "The Star-Spangled Banner" Houston's second album, Whitney, was released in June 1987. The album again featured production from Masser, Kashif and Walden as well as Jellybean Benitez. Many critics complained that the material was too similar to her previous album. Rolling Stone said, "the narrow channel through which this talent has been directed is frustrating".