U2 frontman Bono has a tip for hip-hop fans - listen to sombre singer/songwriter Leonard Cohen. The Irish megastar insists the 71-year-old poet is "the original rapper", and believes his work is key to understanding the urban genre. He tells MTV, "He's the original rapper, you know, if you're interested in hip-hop. "He's a sexy man who made sexy music, who made music asking questions about God and girls and everything."