Following a great gig at Glastonbury, two rising stars of Bragg's prison initiative will play a special showcase on 30 July.
Jonny Neesom and Leon Walker - both former inmates who got into music thanks to Jail Guitar Doors - will be introduced by Billy Bragg at their performance at The Slaughtered Lamb in London.
Speaking to the media, Bragg said: "It's great to be presenting this performance... The voice of ex-prisoners is rarely heard in a society that locks more people up every year and both Jonny and Leon draw on their life experiences to write powerful songs."
Billy Bragg's Jail Guitar Doors initiative introduces musical instruments into prisons to help with rehabilitation.
Image c Joshua Berry