Bb clarinet, boehm system, ABS, 440 Hz, with case The Boehm system is a system of keywork for the flute, created by inventor and flautist Theobald Boehm between 1831 and 1847.
Bb clarinet, boehm system, ABS, 440 Hz, with case The Boehm system is a system of keywork for the flute, created by inventor and flautist Theobald Boehm between 1831 and 1847.
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