Queen will release A Night at the Odeon - Hammersmith 1975 on multiple formats November 20.

The show marked the first live performance of "Bohemian Rhapsody."

"This concert was very special because it was the first time we ever played a whole show completely live on TV …

The Christmas Show," guitarist Brian May wrote in a press release.

"The quality, after great rescue work and transfer into the digital domain, is amazing. And the energy we had comes across very forcefully."

May also spoke on the difference between shows then and now.

"In those days, people went to a rock show to listen - and to jump about and scream and shout, but not to sing every word like they do now," he observed.

"And there's nobody with mobile phones in the audience, nobody doing selfies - how weird is that?"