Musical brass instrument slide apparatus

A musical brass instrument slide apparatus mounted within a brass instrument, having an instrument bell and a bell conduit, with the instrument further having a mouthpiece tube, and

• valve means for effecting pneumatic and selective communication between the mouthpiece tube and the bell conduit, with the valve means having a slide housing, the slide housing arranged in fixed communication to the mouthpiece tube, and the slide housing including spaced parallel housing side walls and a housing first end wall spaced from a housing second end wall, and
• a wind tube in pneumatic communication with the mouthpiece tube, and the wind tube having a plurality of individual tube coils, with the tube coils extending along the slide housing, with the slide housing having spaced pairs of coaxially aligned coil ports defining a predetermined number of pairs of coil ports, with the wind tube coils including an end coil in pneumatic communication with the individual wind tube coils through the valve means and with the end coil directed into one of said housing side walls terminating in an end coil port directed into the slide housing adjacent the housing second end wall, wherein the housing side walls include a first row of side wall ports directed into one of the housing side walls, and a second row of side wall ports directed into a further of said housing side walls, wherein the first row of side wall ports defining first ports and the second row of side wall ports defining second ports, wherein one of said first ports is aligned with one of said second ports to define a housing port pair, and
• the housing port pairs equal said predetermined number.