jeezz olivier joyau and boutique have some OG tchatcho flavour about them,about the songs and how there is inconsistency in quality i believe its the fact of recording albums now over years and in several studios, in the past you could have ultimatum and loi done back to back same year but quality,now you have a 5 year minimum time scale between most albums and sometimes they even have like 5 versions of the same song because its done in one studio in kin,then redone in another because of mabanga change/new verse to add,then redone in europe because of some lost files or because mabanga customers insisted to hear their names sung and not shouted out,then its a bit messy so they even have to use autotune to accelerate ending the recording
whereas in the past it was straight forward,maximum 6 months of recording,banger