Watch Young Guru borrow a beat from Al Green to show the fine line between art and piracy.

I do not know much about writing rap lyrics, but I’m guessing that most rappers do not meet with physicists and cosmologists from MIT and Cornell before sitting down to write. But that’s exactly what Wu-Tang Clan founding member GZA did during the creation of his new album, Dark Matter — a project the rapper hopes will turn his audience on to science.