According to Days Of Wild, Prince recorded these tracks 17 years ago:

Hello
Come Electra Tuesday
Married Man
Killin' At The Soda Shop
Living Doll
For Love
Drawers

Of these, Hello was released as a b-side. For Love was released by Jill Jones in 1987, and Drawers was renamed Little Rock and released by Eric Leeds in 1991.

The rest are not only unreleased but also uncirculating. I'd love to hear them. Anyone?????