Sort of a technology question. All the combatants had bands and orchestras. Who produced the best-quality musical instruments. One would think that with German over-engineering they might get the distinction. Did the Allied occupiers jump on liberated instruments as better than the ones they were issued? Or did another power invest more heavily in music?
An interesting question. Many of the participants produced fine quality instruments. The Italians certainly excelled in strings, the French, Austrians, Russians, Germans all did and the US certainly did. True our industry was largely immigrant skilled derived but the US made fine quality instruments as did many other countries. i am no authority on the subject but would guess the majority of instruments were prewar as per the following link: Band Instrument Manufacturing During World War II