Corinne Bailey Rae and Jorja Smith are among the performers at a Back to Black tribute show. Plus, Cynthia Erivo completes SNL UK’s excellent second run. Here’s what to watch this evening 9.35pm, BBC Two A fitting tribute to the late star’s breakout album 20 years after its release, this special concert was held at the Roundhouse in north London earlier this week. It’s led by a team close to Wine…