She debuted as a musician in 2009, and sung "Kimi ga Iru Kara," the theme song for the Japanese version of Final Fantasy XIII.
On September 3, 2009, at the Final Fantasy XIII premiere, it was announced that she would perform its theme song, "Kimi ga Iru Kara".
Also on September 1, 2010, Sugawara's fourth single, "Suki to Iu Kotoba", was used as the theme song to the 2010 version of the drama Kasoken no Onna.
[3] In September 2016, the track "Mikansei-Canvas", off of her EP "Butterfly Effect", was chosen to be the theme song for the 2016-17 edition of the Paralym Art World Cup.
Her track "Boku wa Robot Goshi no Kimi ni Koi wo Suru", was used as the theme song for the anime of the same name.