She auditioned for Sony Music Japan in 2001 when she was thirteen years old where she performed cover songs of the Destiny's Child hit "Survivor" and "Full Moon Prayer" by Core of Soul.

[2] She was selected out of 1,000 applicants and started her career in 2003 with her debut single "Believe" which was an opening song for the anime Mobile Suit Gundam Seed.

Her first greatest hits album was released on November 29, 2006 to mark the event, and she soon began an acting and stage performing career.

Nami's fourth album, Don't Stay, was released on April 23, 2008, containing songs from her singles "Brightdown", "Cross Season", and "Winter Ballades", as well as some new tracks.

Speculation and rumors surfaced about Nami leaving Sony Music Japan to join another record label.

The title song was produced by nishi-ken, who collaborated with Nami previously for her albums Speciality and Don't Stay.

Well-known examples of her contributions include those in the Gundam SEED and Gundam SEED Destiny franchise ("Realize", "Believe", "Reason", "Result" and "IDentity"), "Brightdown", an opening song for the anime series D.Gray-man, and "Sanctuary", an opening song for the anime series Kiba.

The release of "CASTAWAY" also featured a cover of the famous theme song "Get Wild" from the anime City Hunter, originally performed by TM Network.

She then went on to state that she had been struggling with sinitus since a young age and had regularly been receiving treatment, but decided to get surgery to fix the problem.

[10] Note: The songs below are tributes to several famous Japanese artists and are not presented in any of Nami Tamaki's singles or albums.