In 1958, an anonymous group of overworked and under-budgeted BBC employees set out to make some new sounds for radio and TV. They ended up changing the course of 20th-century music. For millions of people, the work of the BBC Radiophonic Workshop was the first electronic music they had ever heard. Sampling, loops, and the earliest synthesizers-long before audiences knew what they were-made up the groundbreaking scores for news programs, auto maintenance...