The film, starring and directed by Forest Whitaker, is the first to be authorized by the Louis Armstrong Educational Foundation.

Academy Award-winning screenwriter Ron Bass of “Rain Man” fame is also on board. It is unclear when the film is slated for production.

Cohen will share his personal accounts of Armstrong’s life in biographical form, according to a statement.

After getting his start as an office boy in the late 1940’s, Cohen followed the singer throughout his career to become Satchmo’s road manager and later his manager after the death of Joe Glaser.

Glaser formed Associated Booking Corp. with Louis Armstrong in 1940.