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Which Bach trumpet bell should I choose?

The most popular Bach trumpet bell is the 37 bell. The Bach 37 bell has a rich, compact sound of great projection. This is Bach's standard bell for medium large bore (.459") instruments.

The Bach 43 bell is broader, brighter, and more open than the 37 bell. This is the standard bell for Bach's extra large bore (.468") instruments.

The Bach 72 bell has a strong, powerful sound, darker than the 37. This is the standard bell for Bach Vindabona bore trumpets.

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Which Bach trumpet bell should I choose?