Music recording - Digital, Multi-Track, Audio: British Decca had a far-reaching role to play after World War II when its ffrr full frequency range recording became internationally known. The frequency range of discs had been dramatically extended, and Ernest Ansermet’s recording of Stravinsky’s Petrushka in the new process was to awaken the unsuspecting ears of many record collectors in 1946 to the future high fidelity, or “hi-fi,” possibilities of the phonograph. Two other developments in the late 1940s combined with the extended frequency range to produce a radical change in the development of recordings: magnetic recording and the first commercially successful long-playing (LP) record. In 1948 Columbia Records