Massaka is a group name actually. There were 2 guys called Monstar361 and Murdoc. You know Murdoc as Massaka. Monstar361 stopped singing until 2019.Murdoc has been using Massaka name since 2009.U can see him on Katliam 2.
If you are want to know Defkhan you should listen Tornavida, Yeni bir neden, Benzeri yok 2, Intro 2014 and Kapitano. Defkhan is oldschool rapper also Defkhan doing German rap