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acheron
21 days ago
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What I've learned about the trombone
More formally that's an "F attachment", lowering the key of the instrument (assuming a standard tenor trombone) from B♭ to F.
https://en.wikipedia.org/wiki/Trombone#Valve_attachments
See also
https://en.wikipedia.org/wiki/Brass_instrument#Trigger_or_th...
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See also https://en.wikipedia.org/wiki/Brass_instrument#Trigger_or_th...