Chiza was born in the Democratic Republic of the Congo.[2] When he was five years old, he had to flee his country. He lived in Uganda in a refugee camp with his aunt for three years and then came to Sweden. There, he lived in the village of Kullsbjörken, near Leksand, where he has resided since 2015.[3][4] He participated as a singer in the Swedish talent show Talang 2018 (as Tousin Chiza) which was also broadcast on TV4; he made it to the semifinals before being eliminated.[5] He received praise for his semifinal performance from judge Bianca Ingrosso.[6] Tusse was a finalist in Swedish Idol 2019,[7] broadcast on TV4, alongside Freddie Liljegren, and was ultimately declared the winner in the final.[8][9]
After winning Swedish Idol, he released three singles, two of them songs he performed on Idol: a cover of Whitney Houston's "How Will I Know" on 22 November 2019 as a Top 12 contestant.[7] And as the winner, he released his version of the season's winning song, "Rain", on 3 December 2019.[10] As a result of his victory, he got to release his debut single as a CD single as well as on the iTunes Store. His third single is called "Innan du går"[11]
After his first Eurovision rehearsal, Tusse was the victim of racist comments on social media.[17]
In the semi-final, Tusse managed to qualify for the final on 22 May.[18] In the final, he reached 14th place with his song.[19] After Eurovision, he did an interview with the magazine Vanity Teen in which he talked about his personal life, his experience in Eurovision and his future career.[20]
In June 2023, it was revealed that a film about Tusse's life was to be produced in 2024.[21]
