Ayaka Hirahara (平原 綾香, Hirahara Ayaka?, born May 9, 1984 in Tokyo) is a Japanese pop singer who belongs to the music label Dream Music. Her father Makoto Hirahara is a saxophone player, grandfather Tsutomu Hirahara was a trumpet player, and her older sister Aika Hirahara is also a singer. From the age of 6, she belonged to The Matsuyama Ballet for 11 years. She started playing saxophone when she was 13 years old, then learned classical saxophone at Senzoku Gakuen High School. Currently, she is studying in the Faculty of Jazz majoring in saxophone at Senzoku Gakuen College of Music. Her first single, "Jupiter", was released in Japan in December 2003, and went on to be one of the biggest selling singles of 2004. The melody of the song is based around the melody to the "Jupiter" section of The Planets Suite by Gustav Holst. In 2006, she sang the ending theme "Reset" of the PlayStation 2 game Ōkami and the opening theme for the anime The Story of Saiunkoku.