Variety is taking a look at 50 years of James Bond on the big screen. One article takes a look at John Barry in which it quotes David Arnold:
“John Barry uniquely, single-handedly, created the spy genre of music,” says David Arnold, composer of the past five Bond scores. “In his initial arrangement of the Bond theme you have the bebop swing vibe coupled with that vicious, distorted electric guitar. You hadn’t really heard that combination before. It was cocky, swaggering, confident, dark and dangerous.”
The article goes on to discuss how influential Barry was on the sound of subsequent 007 composers and how the scores were not only effective in the films, but sold millions of records.