Indigo Nights is a live album by Prince, mainly comprising songs played live during some of the aftershows at the indigO2 night club in London in 2007. It contains eight live versions of previously-released Prince songs, five cover songs, two new songs, and a monologue.[1] The CD is only sold coupled with the 21 Nights coffee table book which was released on September 30, 2008.[2] The book reached number 9 on The New York Times best selling Hardcover Nonfiction tiles.