Blue Company is a novel composed of email messages from Berto, a lovesick copywriter transferred to 14th Century Italy who addressed letters to his romantic correspondent in the 21st Century. People were able to subscribe to "Blue Company" and received email messages from Berto for a month. The novel was performed twice: once in Spring 2001 and again in Spring 2002. The 2002 performance was followed by Scott Rettberg's unauthorized continuation of the fiction. He e-mailed to many of the same Blue Company subscribers and composed Kind of Blue. It is a sequel that re-casts the characters of Blue Company. The last letter of Kind of Blue was written by Rettberg and Wittig collaboratively, thus knitting the two pieces together finalizing a collaborative style of "chatmail."