Mustafa first gained recognition in 2014 at the age of 18, by featuring on Lorraine Segato's single "Rize Time", a remix of her band's own song "Rise Up", in which he performs a spoken word poem on the prelude. He then went on to produce the spoken word poetry film Spectrum of Hope in September 2014. It was a collaborative project between him and Thompson Egbo-Egbo. He was featured on CBC News in which he explores the connection between art and athletics in his Pan Am poem with Heather Hiscox.. He gained national recognition for a poem which was shared by Drake on his Instagram in January 2015 in which he tagged Mustafa. With the death of Muhammad Ali, Mustafa wrote a poem to "honor his hero". Ahmed performed the poem that came from that writing on Metro Morning, a CBC Radio One local morning program in Toronto. As member of Canadian hip hop collective Halal Gang, Mustafa has made appearances in a number of music videos for his associates, including the single "Feel" by Safe released on October 2016. He went on to provide background vocals and co-writing the song "Attention" by The Weeknd on the latter's album Starboy. In the same year, Mustafa was appointed to Justin Trudeau's Youth Advisory Council, advising the Prime Minister and the Government of Canada on policies and programs that are important to them. Mustafa was placed on Now's list of Toronto musicians to watch for in 2017.
2018–present: ''Remember Me, Toronto'' and "Stay Alive"
Mustafa performed at the Fast in the 6 festival at Nathan Phillips Square held on 1 June 2018. In July 2018, he paid condolences to his deceased associate, Smoke Dawg, who had been gunned down on 31 June 2018 in front of a Toronto nightclub. In March 2019, Pierpaolo Piccioli collaborated with four poets, including Mustafa, for Valentino's autumn/winter 19 collection to celebrate love whose words were emblazoned in bright lights at the show. A transcript by Mustafa from his poem "From the Perspective of Black Love" read "In your eyes I can see an eternity" as part of the collection. He describes attending the show as an emotional experience, seeing women in creations made for their bodies. Vogue described the event as "poetry back in fashion". The dress with his poem went on to be worn by Emilia Clarke. Mustafa the Poet produced and released Remember Me, Toronto, a short Canadian documentary film about the hip hop culture in Canada. The film was released on 17 March 2019. The film was a project created for artists in this video and everyone in the Canadian hip hop communities. It discusses the losing of people due to the increasing gun violence and homicide rates in Toronto over the past decade. Mustafa aimed to discuss the systemic structure working against the lower economies of Toronto and wanted to give these artists the opportunity to "rewrite their memories and the memories of those they lost." In the film, the artists reflect on the inter generational nature of trauma and gun violence. Artists appearing in the short include Drake, Baka Not Nice, Gilla, Pilla B, TJin, Pressa, Loco City, Smiley, Top 5, Blockboi, Twitch, Jay Whiss, Puffy L'z, Rax, Booggz, Yung Lava, Mustafa the Poet himself and archival footage from the murdered artist Smoke Dawg. Noah "40" Shebib scored the movie. Mustafa was noted as one of the 10 Canadian songwriters who are penning the biggest hit songs right now by CBC Music in April 2019. He went on to title all the songs in Frank DukesParkscapessample pack released on June 2019. The sample pack went on to be used on Taylor Swift's album "Lover" in which the Regent Park School will get royalties every time the album is brought, streamed or sampled. On 10 March 2020, Mustafa released his debut single "Stay Alive". The single was dedicated to those he's lost to gun violence and was known for capturing Regent's Park resiliency. The single was produced by Frank Dukes and James Blake. The single featured numerous cameos from Toronto rappers including Halal Gang members Puffy L'z and Mo-G as well as Lil Berete. It was known for including lyrics about resilience, community, and the bleak realities of living on the fringes pair perfectly. The single prompted Complex to list Mustafa on the list of Best New Artists of the March, 2020.