Ddumba was a backing vocalist on Katy Perry's song "Walking on Air" in 2013 and has collaborated with artists such as the hip hop band Looptroop Rockers, duo Lorentz & Sakarias and Adam Kanyama in 2012.

[6] She performed at the 2015 Swedish Grammis,[7] and in 2015 won 'Newcomer of the Year' at the Grammisgalan and 2016 P3 Gold Awards.

[9] After listening to traditional Ugandan nursery rhymes and songs, she became interested in melody and phrasing.

[11] In 2008, at the age of fourteen, she joined the Tensta Gospel Choir, and sang with the group for about six years.

Also in 2012, she sang on Adam Kanyama's track, "The Golden Child"[10] and collaborated with the duo Lorentz & Sakarias.

The same year she collaborated with hip hop group Looptroop Rockers on their song "Sea of Death".

[citation needed] In 2015, Ddumba released her second single, "Effortless", which was certified platinum in Sweden.