What if The Beatles hadn’t quit touring in 1966? John, Paul, George and Ringo left an indelible mark on the burgeoning live circuit - from their Cavern Club beginnings to their momentous US stadium shows - but there was still so much more to come.

Instead, their self-imposed exile meant the world never got to hear classics from Revolver, Sgt Pepper’s Lonely Hearts Club Band, Magical Mystery Tour, The White Album, Abbey Road et al., performed live, on stage, by ...