Prince's estate has shared Piano & A Microphone: 1983, the first posthumous collection of previously unheard recordings from the artist. The nine track album consists of rehearsals committed to cassette tape in Prince's home studio in Chanhassen, Minnesota. It includes cuts like "17 Days," "Why The Butterflies," and "Mary Don't You Weep," which appeared in Spike Lee's BlacKkKlansman and received a very moving set of visuals this week. The tracklist also contains a cover of Joni Mitchell's "A Case Of You." Listen to A Piano & A Microphone: 1983 below.