Robin Gibb’s lost solo album Sing Slowly Sisters will be released 45 years after it was recorded.

The album forms part of a collection of albums capturing the late Bee Gee’s entire musical output at 19 years old, recorded over a 12-month period from 1969 to 1970.

Robin Gibb had planned to complete the album prior to his death from cancer in May 2012.

Saved by the Bell – The Collected Works of Robin Gibb: 1969-70 will be released on June 1st.

It features Robin Gibb’s first solo album, 1969’s Robin’s Reign, as well as Sing Slowly Sisters.  The set also contains a variety of alternate takes and versions, demos, unreleased tracks and other bonus material.