"It's been a really amazing and bittersweet process." Matt Cameron on the emotion of making a new Soundgarden album using demo vocals recorded by the late Chris Cornell

Soundgarden posing for a photograph on a sofa i 2012.

Soundgarden are about 70% of the way through making a final album, featuring vocals recorded by Chris Cornell when the band were demoing the tracks.

The songs were written in 2015 and 2016, with Cornell laying down vocals on demos before his death in 2017.