Saori Atsumi is born on February 2 at Iwata , Shizuoka Prefecture and has the blood type O. She likes the moon , stars and chocolate . Her favourite artists are Ayano Tsuji , Suzanne Vega , Kazuyoshi Saitō , Magokoro Brothers , Kazuyoshi Nakamura , Hatsukoi no Arashi , Tsuyoshi Nagabuchi and THE BOOM .
When she was young, her mother used to sing lullabies to her and use the organ during her kindergarten lessons; this had a lot of influence for her interest in music. She admired Tsuyoshi Nagabuchi and decided to take up the guitar during middle school. During high school, she started to write music.
It is implied that she can paint and draw as well. She designed the cover of her self-produced single. Her official site features the cover of her latest single, Namida no Riyū. This became evident when the singer participated in a charity event and contributed a tote bag featuring her artwork on it.
Before her commercial debut, she often does live in-house performance at different places such as Apia in Shibuya, Tokyo as well in-store performances at various Tower Records stores.
She self-produced a cassette that contains 2 songs on October 1999 titled Mayonaka no Radio. The title track was later included in her first self-produced CD titled Tasogare Ryūseigun with a acoustic version of it. The CD was released on July 27, 2002.
Then she officially debuted with her single, Mōsukoshi… Mōsukoshi… as the ending theme of Midori Days in 2004. Later in November, she released her second major single, Bīdama. The title track became ending theme for the anime series Genshiken . The single contains a hidden track titled Nagare Hoshi (流れ星 ? ). It's a cover version of track by Magokoro Brothers.