Hasan began her career on
TikTok, posting beauty and fashion videos aimed at
Muslim women alongside occasional videos of her singing
Adele covers. After being exploited by a company that hired her for an advertising campaign and then failed to pay her, in June 2021 she released her first original single and video "What If I Took It Off for You?", about social attitudes toward Muslim women who wear the
hijab. She followed up with the singles "Paper Thin" in October 2021 and "Dollar Signs" in January 2022, before releasing the
EP Eleven Achers (stylized in all lowercase) in March 2022. The EP was listed as one of the best extended plays of 2022 by
Exclaim!. and "I Wanna Be Your Right Hand" in February 2023. In May 2024, Hasan released the single "Stick of Gum" for her debut album. The song's music video was shot entirely in her family's hometown of
Jericho in the occupied
West Bank. In the summer, she released the singles "You Wore It Better", "Fine Print", and "Coloured Concrete". "Coloured Concrete" was listed as one of the "25 Best Canadian Songs of 2024" by
Billboard Canada. On September 13, Hasan independently released her debut album
Verbathim. Hasan stated the title "Verbathim is just the word verbatim except someone is grabbing my tongue" to symbolize the censorship she has faced. In March 2025, Hasan was awarded Artist of the Year by non-profit organization Women in Music Canada. She also won Breakthrough Artist of the Year and Alternative Album of the Year for
Verbathim at the
2025 Juno Awards. The album was also shortlisted for the
2025 Polaris Music Prize. In September, Nemahsis was announced as a recipient of the
Canadian Songwriters Hall of Fame's 2025 Breakthrough Songwriter Award. On October 17, Nemahsis released an official cover of "
Team", originally by
Lorde, along with a music video in memory of Palestinian journalists
Saleh al-Jafarawi and
Anas Al-Sharif. In April 2026, Nemahsis announced her next single was titled "Paper Soldiers". ==Artistry==