[1] Mattei was born in Fiumicino as the older sister of Italian singer and record producer Tha Supreme.

[4] After a few years of inactivity, in which she moved to London, in 2019 she resumed her musical career under the pseudonym Mara Sattei, obtained by interchanging the initials of her first and last name.

On January 14, 2022 she released her first studio album Universo, with the extracted singles "Ciò che non dici" and "Parentesi", the latter in collaboration with Italian singer Giorgia.

[9][10] In the summer of that year, Sattei also collaborated with Fedez and Tananai on the song "La dolce vita",[11] which reached position 1 on the Classifica FIMI Artisti.

[13] Her entry is titled "Duemileminuti" and is the result of collaboration with Måneskin's frontman Damiano David and Tha Supreme.