At a recording session Arthur Haddy, chief recording engineer of the Decca Record Company, spotted Olof's acute ear for orchestral balance. He recommended to the head of Decca, Edward Lewis, that Olof should be invited to join the company to produce some of the many recordings planned for the expansion of its classical catalogue. Decca had developed a revolutionary new recording technique known as "ffrr" (full frequency range recording) which put the company far ahead of its rivals in the realism of sound on its discs.
