Focalistic’s sonic catchphrase, “Ase trap tse ke pina tsa ko kasi” has sealed his superstar status early in his career.

The 24-year-old supernova, real name Lethabo Sebetso, uses the signature line in many of his songs as a precursor warning to listeners that he’s about to drop a fire verse. In doing so he has become the poster boy of genre-blending, the music style of local hip hop and Amapiano...