Visions of prog rock - exhibition by artist Roger Dean

We know that vinyl is making a bit of a comeback for bands to release their music.

But the real heyday for LPs was back in the 1970s, with progressive rock and concept albums.

It was a time when the artwork on the sleeve was almost as important as the record itself.

Now, there's an exhibition in Sussex celebrating the most famous cover artist of them all, Roger Dean, who's worked with groups like Yes and Pink Floyd.

Malcolm Shaw spoke to Roger, and to Tracy Thomson of Trading Boundaries.