. . "device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone"@en-us . "valve"^^ . . . . . . . . . "04519536-n"^^ . . . . . . "104344122"@en-us . "103566203"@en-us . . . "104519536"^^ . . "0"^^ . "valve"@en-us . . . . . . . . "0"^^ . . .