Her career started in 2002 with the release of her first single Beautiful Dreamer, a soft love ballad which did very well in the charts, and was later featured on the Relaxin’ with Japanese Lovers compilation album.
Because of "'I Will"', the two other songs included with her "I Will" single, "Candy Rain" and "Pearl Color ni Yurete", became popular among American fans.
In November 2004, Sowelu released her 8th single, "Last Forever", which became the TV insert song for the new drama There goes Nurse-man, and her cover of "The Rose" was featured on a Nescafe commercial.
In the music video for the song "to YOU" several photographs of her family and her childhood are intercut with scenes of her singing in a wide room with large glass windows.
The single had moderate success and reached #28 on the Oricon Weekly Charts[citation needed] More recently Sowelu will participate in the 2008 Nike ad campaign, "MY MUSIC,MY FORCE"; along with Perfume, Home Made Kazoku, Tohoshinki, Shota Moriyama and Shoko Nakagawa.