Trading twelves
The Selected Letters of Ralph Ellison and Albert Murray
"When two jazz musicians trade twelves with each other in a jam session, one musician begins by riffing off twelve bars of music, the other musician throws the twelve bars back through his instrument, the first answers, and so, back and forth, in an ecstatic exchange of ideas and emotions. So it is with these letters, joyful music created by the exchanges between two dear friends."--Jacket.
