Hi Worsesooner,
thanks for these informations, I had been wondering for a long time...
You're right, "banyarwanda" are the people from Rwanda. Their language is called "kinyarwanda".
Concerning my origins, I don't have any ethiopian roots (yes, of course, there's my great grand mother Lucy, but she's everybody's ancestor

), but I've been travelling in this fabulous country some years ago. I love their language and culture, so I spent my time asking questions and reading. Of course, I asked about "Satta amassagana"...
Concerning reggae in Ethiopia, you're right, it's nothing there compared to many other african countries (I've never been to Kenya, but I've travelled in West Africa, where roots is everywhere). People don't even know Bob Marley ! (Of course this is not true for the rastas in Shashamane, but it's something totally different). But it's not that surprising, because I'm quite sure that Mengistu's regime, the Derg, was not very keen on promoting a music whose lyrics glorified Selassie.
There are now some ethiopian reggae artists (Zeleke Gessesse, Cha Chi,...) but they're based in the US.
Funny how Joseph Hill was a hero for African audiences. In Ghana, Burkina, Mali, Ivory Coast, he's also one of the very favourite artists, alongside Burning Spear and U Roy. And of course Bob.