This time last year, some giant braille appeared on Hitchin’s Windmill Hill.

The huge concrete display was an artwork by David Johnson, and it attracted a lot of attention.

Now David, who is blind, is creating a new pop-up piece there on Saturday and Sunday, July 21 and 22. He is building a giant white scaffolding cage housing a full-size red figure.

The ambiguous installation will be on show for two days only, and David hopes lots of people will use it as a live performance space.

He said: “The crazy cartoon-like ‘cage’ doesn’t actually imprison anyone – the bars are too far apart. I think of the cage as representing the constraints that disability brings with it.

“Any rappers, ranters, spitters, speakers, poets, preachers, dancers, divas, strummers, strippers, groovers, grimers or anyone else who wants to take this unique opportunity to be part of this interactive art event, please get in touch.”

Call David on 07990 877687.