JAHsigns 'sings' Who Knows' by Reggae Revival artists Protoje & Chronixx in American Sign Language. "'Who Knows' is more than just a cool song with cool video. It is, in fact, one of the greatest statements made thus far for the Reggae Revival in that both Protoje and Chronixx are showing us what is possible when egotistical behavior is abandoned for fruitful collaboration."......from the Reggae Revival website. ComeUNITY works!!!