young talent over the years. >> wynton marsalis: i've never heard anyone who could play like him. >> cooper: nobody. >> marsalis: and no one has heard a person who could play like him. >> cooper: he has genius. >> marsalis: there's no question about that. >> cooper: genius? this is what he means. >> marsalis: let's take a traditional hymn like "just a closer walk with thee." so if you just play the... the melody, and with basic chord changes, this is with no improvisation. >> alexander: oh, the song, okay. how does it go? ( playing "just a closer walk with thee" ) >> marsalis: now he's going to ( laughter ) >> cooper: that was cool. >> marsalis: oh, man, somebody 12 playing like that. >> cooper: joey's talent may be undeniable, but marsalis says no one can explain where it comes from. >> marsalis: "why?" we don't... we don't know why. i once asked miles davis about sound. "man, how you get the sound you get?" he said, "man, nobody know about sound. sound just is." and i think that about his... his abilities. they are. >> cooper: they just are. >> marsalis: they are. >> cooper: it's n