In January 2018, Sonza released the song Rebolar (Twerking) from her first EP as a single. The video peaked 1st on YouTube. In March, Rebolar (Remix) with 5 remix tracks of the song was released as an EP.
In June 2018, Sonza made a special guest appearance in an episode of Brazilian TV sitcom Dra. Darci (Dr Darci), in which she played Julinha. In July, she released Devagarinho (Step by Step), which made it to Spotify's Brazil Top 50 chart.
In October 2018, Sonza was invited by soap opera writer Aguinaldo Silva to record Nunca foi sorte (It Was Never by Chance), a song written by Silva, for the soundtrack of Rede Globo's telenovela O sétimo guardião (The Seventh Guardian). She also made a special guest appearance in one of the episodes. Later that year, Sonza released the song as a single and music video.
In November 2018, Sonza released the single Boa menina (Good Girl). In February 2019, a forró version of the song was used in a video featuring Whindersson Nunes. In March 2019, she released Pior que possa imaginar (Worse Than You Can Imagine). Later that year, Sonza released her first album, Pandora.