Hi !
The answer is
C Algeria , and the lyrics mix both French and Arabic
It does now, mix French and Arabic mainly since the 80's......
Raï is quite popular in France.
But at the beginning, in the 20's "Raï" was a popular Algerian music.
The after Algerian independence, it became more "pop" and in the "80's", kind of a "world music" as reggae.....
It has always been submit to censorship in Algeria because of the lyrics, the government even tryied to ban Raï without success...
Hope this will help !