This is an interview I conducted with the great recording engineer Bill Porter back in 1987. We chatted and listened to some of his recordings. In one week of 1960, Bill Porter-engineered recordings accounted for 15 of Billboard's Top 100 Singles. You could chalk it up to his having folks like Elvis Presley, Roy Orbison, Chet Atkins and the Everly Brothers to record, but then you'd have to explain why, with Porter out of the picture, so many of their careers took a nose-dive. The fact is, the...