[citation needed] On 14 March 2010, Alpha TV ranked Theodoridou the 12th best selling female singer in the nation's phonographic era (since 1960), with a total of ten platinum and three gold albums.

In 1996, she relocated to Athens where she appeared at the music hall "Handres" next to other big Greek singers such as Antonis Remos, Labis Livieratos and Triantaphillos.

Her high quality performance on stage along with her voice and style led to her self-titled debut album, Natasa Theodoridou, being released in August 1997.

In 2002 she collaborated with the songwriter and composer Giorgos Theofanous, in the album Tosi Agapi Pos Na Hathei, which resulted in big commercial success.

[4] In 2005, Natassa returned to the big musical halls, working with Giannis Parios and Sarbel, while her seventh, multi-collective, studio album, Os Ekei Pou I Kardia Bori N'Andexi was released.

[9][10] In November 2008, she released Dipla Se Sena, a two-disc best-of album that included 37 older hits of her career, a DVD with music videos, and three new songs written by Giorgos Theofanous with lyrics by Thanos Papanikolaou.

[11] In July 2009, Theodoridou released the studio album "Mia Kokkini Grammi", cooperating for the second time, after 2002, with composer Giorgos Theofanous.

The following year, 2016, Theodoridou released the album "Asta ola ki ela", which marked her departure from Minos-EMI for Heaven Music.

Theodoridou has worked with numerous well-known composers and songwriters who had helped her set new standards in local music repertoire.

Giorgos Theofanous, Giorgos Moukidis, Petros Iakovidis, Antonis Vardis, Giannis Parios, Kyriakos Papadopoulos, Ilias Filippou, Giannis Papadopoulos, Mihalis Hatzigiannis, Eleanna Vrachali, Evanthia Reboutsika, Michalis Gkanas, Vasilis Giannopoulos, Natalia Germanou, Thanos Papanikolaou, Tasos Panagis, Panos Falaras, Triantaphillos, Evi Droutsa, Eleni Giannatsoulia and Phoebus are only a few of the songwriters and composers who have worked with Natassa.