The Fresh Air Interview: Jay-Z ‘Decoded’

Jay-Z shares his rapping techniques without writing down rhymes:

As I got further and further away from home and my notebook, I had to memorize these rhymes — longer and longer and longer. … By the time I got to record my first album, I was 26, I didn’t need pen or paper — my memory had been trained just to listen to a song, think of the words, and lay them to tape.