Umuhanzi Seleman Hassan w’imyaka 25 y’amavuko,yatangiye umuziki mu mwaka wa 2012 kugeza ubu amaze gukora indirimbo zigera kuri eshatu, harimo iyo yakoranye n’umuhanzi 20% wo mu gihugu cya Tanzania yitwa "Nzagaruka" n’izindi nka Nzguharira.

Umuhanzi Seleman Hassan w’imyaka 25 y’amavuko,yatangiye umuziki mu mwaka wa 2012 kugeza ubu amaze gukora indirimbo zigera kuri eshatu, harimo iyo yakoranye n’umuhanzi 20% wo mu gihugu cya Tanzania yitwa "Nzagaruka" n’izindi nka Nzguharira.