Geoff Emerick, the Beatles’ revolutionary recording engineer, pioneered innovative audio engineering techniques such as close-miking drums, using a Leslie speaker for vocals, and tape splicing to create psychedelic soundscapes. His work on albums like "Revolver," "Sgt. Pepper’s Lonely Hearts Club Band" and "Abbey Road" transformed pop music and inspired generations of engineers.

The Lost Beatles Tape: Geoff Emerick, the Demo That Shouldn’t Exist, and the $5 Million Mystery By William Zabaleta | Recording Revolution Picture the back rooms across from EMI’s famous studios in Hayes and Abbey Road—steel carts piled high with reels, masking-tape labels curling, handwriting from sessions that built the modern world. Then comes the order: destroy what isn’t needed. That’s where the story starts. A reel disappears the wrong way—tucked under an arm instead of