Although he's bet known for his '70s and '80s hits with the Alan Parsons Project, Alan Parsons made his bones as an Abbey Road Studios engineer working with the Beatles, Pink Floyd, and Paul McCartney & Wings, among many others.
Ultimate-Guitar.com quoted Parsons recalling his earliest project with the Beatles: “'Let It Be was the first to happen. That was actually nothing to do with the Abbey Road Studios except that I was sent down (to the Beatles' Apple Studios) as a member of staff to help them out. And it was quite an intimidating experience, walking into the Apple basement studio. There were all four Beatles there, their wives, and it was intimidating, but amazing at the same time. . . As a result of working on the Abbey Road' album, at least half the time they were there making it, but I got to know Paul a bit better.”
Parsons went on to say, “I probably got to know Paul and Linda (McCartney) best on the (1971) Wild Life album, which I didn't engineer; I did a mix on one of the songs on Wings' Wild Life, and Paul said, 'It's fine, we'll go with it.' So that was my first real breakthrough, just getting a mix of the Wings onto that first album.”