In 1997, Aya Ueto participated in the 7th All-Japan National Young Beauty contest, where she received a special award from the judges. Her discovery led to many TV commercial deals, which would eventually start her acting career.In 1999, she formed the J-pop band Z-1 with Mami Nejiki, Mai Fujiya, and Manami Nishiwaki. They released five singles before breaking up, but Aya went on to start a solo career when she signed with Pony Canyon two years later. She released her first single, "Pureness," in 2002. Since then, she has released several more singles and three albums.Meanwhile, Aya began her acting career in 2000 with a role in Namida wo Fuite. In 2001, she played a part in 3 Nen B Gumi Kinpachi Sensei, and her performance greatly boosted her popularity. She starred in several later dramas, including Koukou Kyoushi 2003, Hitonatsu no Papa e, and Aim for the Ace!. She also starred in Ryuhei Kitamura's blockbuster Azumi and in its sequel, Azumi 2: Death or Love.She is often said to physically resemble Japanese star Momoe Yamaguchi. As of 2006, she remains ubiquitous in Japan, appearing constantly on magazines and in commercials.