SUMMERS: Rwandan rap music didn't really exist. People loved the American hip-hop sounds of the '90s. Pro Zed and Kenny K-Shot paired new beats with ancient songs.

Hip-hop is all about the beats and the flow. For two Rwandan artists, that flow sometimes comes in four languages... (SOUNDBITE OF SONG, "NSHAKA") PRO ZED: (Rapping in non-English language ...

Loud Sound Studios is home to two of Rwanda's up-and-coming hip-hop acts: Pro-Zed and Kenny K-Shot.