One night in 2019, DJ Kgaogelo Moagi, better known as Master KG, called up singer Nomcebo to come to his Johannesburg studio to record a song. “‘But it’s very late,’” Nomcebo recalled telling him.

Staff and members of Parliament led by Majority and Minority leaders Amos Kimunya and John Mbadi, respectively, practice Jerusalema challenge at Parliament Buildings in October 2020. [David Njaaga, ...