Previously unreleased music by Prince on the way

Prince's label on Friday announced it will release the first posthumous music from the pop icon including an entire second album to accompany Purple Rain.

The announcement, made a week after a tribute concert in Prince's native Minnesota meant to offer closure after his sudden death on April 21, comes as his estate steadily moves forward on a business plan for his vast holdings.

Warner Brothers Records said it would next month issue a 40-track greatest hits collection, Prince 4Ever, with an attached 12-page book of photographs.