“The Beatles’ Sgt. Pepper’s Lonely Hearts Club Band remains the most iconic album cover of all time. From Paul McCartney’s original concept to the final design, staged by British pop artist Peter Blake and his then-wife, Jann Haworth, it’s not just an album cover, but a dazzling display of modern art that defines its era. Not only a groundbreaking design for the time, the artwork also broke the bank, costing almost £3,000 to create – well over £50,000 in today’s money and more than any other pop album sleeve at that time. The concept was for the four Beatles themselves to appear in costume as Sgt. Pepper’s Lonely Hearts Club Band, surrounded by a gathering of influential people as if they had just performed a concert. A total of 58 different people are depicted on the final artwork, which was photographed by ​Michael Cooper. As Peter Blake…