FlamingBeatles on Instagram: "On April 18th, 1975, John Lennon gave what many consider a bizarre appearance on Salute to Sir Lew, a TV special honoring British media tycoon Lew Grade. Wearing a red leather jumpsuit and backed by bald men in black leather with fake faces on the back of their heads, Lennon performed “Slippin’ and Slidin’,” “Stand By Me,” and “Imagine.” Of these, only “Stand By Me” has never been officially released, with just short snippets surfacing online in recent years. This w