He wrote and composed "Namibia, Land of the Brave", which has been the national anthem of the country since 1991.
He also joined a school band, The Ugly Creatures, which was judged as "pioneers of church and dance stage music".
Doëseb earned his degree in music at the Musikschule Herford, in Germany.
He was also the chairman of the committee tasked with composing an anthem for the African Union in Addis Ababa, Ethiopia.
He was granted "veteran" status by Namibia's government and lived in Katutura, Windhoek.