The following is a lengthy audio discussion of Toomer’s Cane.  You may want to listen to the sections that run from approximately 12:20-17:00 which discusses Cane as an attempt at a new American literature, and 31:53-36:00 which discusses Toomer’s dislike of classification of the African American experience.

You may be interested in skimming an academic article on Cane written for a professional journal. Note that this is a French journal, but the text of the article is in English.

Re-Presentation And Re-Memory Of The Southern Landscape in Cane: Jean Toomer’s Memorial Minor Writing