I actually lived in Paris in 1998 and learn to speak basics, but all I can tell you now is that these people are definitely speaking French. This is a very very talented beat boxer from what appears to be the French version of American Idol.
Americans thought what Blake was able to do was amazing stuff; that is, until I happened upon this video of this French beat box magician.
I think at one point the judges asked him to repeat a portion of his music to determine whether or not this guy was actually creating 3 unique and different sounds, all at the same time.
The jaw-dropping answer is yes, he is actually making 3 different sounds at the same moment (while I can barely walk and chew gum at the same time), and can actually make a recognizable tune with his sounds.
Watch and be amazed.