the following detailed description illustrates the invention by way of example and not by way of limitation . the description clearly enables one skilled in the art to make and use the invention , describes several embodiments , adaptations , variations , alternatives , and uses of the invention , including what is presently believed to be the best mode of carrying out the invention . referring to fig1 and 2 , a shoulder supported percussion musical instrument carrier and vibration isolation support system of the present invention is shown generally at 10 . the carrier comprises a belly - plate or vest portion 12 adapted to fit the torso of a wearer , a pair of shoulder straps 14 , each secured to the vest portion 12 at a first end , and a back bar 16 linking the opposite ends of the shoulder straps 14 together . a pair of support rod receptacles 18 are secured to the front surface of the vest portion 12 by bolts or rivets 19 . support rods 20 , preferably j - rods , are supported in the receptacles 18 and secured in position by set screws 21 . each j - rod 20 may be adjusted vertically and rotationally within the support rod receptacle 18 , providing vertical movement for height adjustment , and rotational movement in a horizontal plane for altering the spacing between the opposite ends of the j - rods 20 . a percussion instrument support frame 22 is secured to the j - rods 20 , opposite the front surface of the vest portion 12 . each of the shoulder straps 14 is secured to the vest portion 12 with a vibration attenuating element 24 to provide vibration isolation between the vest portion 12 upon which the percussion instruments are carried , and the shoulder straps 14 . the vibration attenuating element 24 , shown in fig6 is preferably composed of a rubber or similar material having vibration isolating or attenuating properties interposed between the vest portion 12 and each shoulder strap 14 . a bolt or rivet 25 integral with , or passing through , the vibration attenuating element 24 secures the respective shoulder strap 14 to the vest portion 12 . those of ordinary skill in the art will recognize that a wide variety of materials having vibration isolating properties may be utilized as the vibration attenuating elements 24 . correspondingly , the bolt or rivet 25 may be replaced by other conventional connectors to secure each shoulder strap 14 to the vest portion 12 . the percussion instrument support frame 22 comprises an upper instrument support plate 30 and a lower instrument support plate 32 , secured in a predetermined spaced relationship by a pair of c - brackets 34 . in the embodiment shown in fig1 and 2 , the upper instrument support plate 30 is secured to the upper extensions of each of the c - brackets 34 by bolts or rivets 35 . correspondingly , the lower instrument support plate 32 is secured to the lower extensions of each of the c - brackets 34 by bolts or rivets 36 . one or more support rods 38 are secured between the upper instrument support plate 30 and the lower instrument support plate 32 , to increase the stability thereof , and to facilitating maintaining the spaced relationship . to secure the percussion instrument support frame 22 to the j - rods 20 , each of the c - brackets 34 includes a rod receiver 40 . each c - bracket 34 is a mirror image of the other , and accordingly , the following description will describe only one c - bracket 34 . corresponding reference numerals in the figures identify corresponding components on each c - bracket . the rod receiver 40 comprises a section of tube 42 having an inner diameter sized to receive an end of the j - rod 20 in a friction fit . the tube 42 is secured to the c - bracket 34 by an adjustable bolt 44 passing diametrically through the tube 42 adjacent an upper end 43 . the orientation of the longitudinal axis of tube 42 may be adjusted parallel to the face of the c - bracket 34 by pivoting the tube 42 about the adjustable bolt 44 , thereby permitting the percussion instrument support frame 22 to be orientated at an angle relative to either the ground or the j - rod 20 . a stop 46 is secured to the c - bracket to provide for perpendicular alignment between the planes defined by the upper and lower instrument support plates 30 , 32 and the longitudinal axis of tube 42 . during use , the upturned end of each j - rod 20 is seated within a corresponding rod receiver 40 from the lower end of each tube 42 . the percussion instrument support frame 22 is oriented at a desired angle relative to the j - rods 20 , by pivoting each tube 42 about the adjustable bolts 44 . once the desired angle is achieved , the adjustable bolts 44 are tightened to secure each tube 42 in a fixed relationship to the c - bracket 34 on which it is mounted . turning to fig3 through fig5 there is shown one or more percussion musical instruments 100 secured to the percussion instrument support frame 22 . each percussion musical instrument 100 includes a cylindrical body or shell 102 and a drum head 104 stretched over the upper end of the shell 102 . the drum head 104 is secured to the shell 102 by a rim 106 which bears on the upper edge of the shell 102 . a plurality of equidistantly spaced tension lugs 108 extend through the rim 106 and are threaded into casings 110 fastened to the side of the shell 102 . each casing 110 has a predetermined length l , and an axially disposed threaded bore 112 , open at each end , into which a tension lug 108 is threaded . referring to fig1 it is shown that the upper and lower instrument support plates 30 , 32 each include , along corresponding peripheral edges 114 , a plurality of vertically aligned curved recesses 116 . each curved recess 116 has a radius and a radial dimension . the radial dimension corresponding to an outer radial dimension of a percussion musical instrument 100 intended for attachment at that location . further shown in fig1 are a plurality of vertically aligned instrument attachment points 120 , preferably bolt receiving bores , adjacent each curved recess 116 , and spaced about each curved recess 116 in positions corresponding to the placement of casings 110 about the shell 102 of a percussion musical instrument 100 intended for attachment at that location . the predetermined spaced relationship between the upper and lower instrument support plates 30 , 32 , as defined by the dimension of the c - brackets 34 , is greater than the predetermined length l of the casings 110 on the percussion musical instruments 100 intended for attachment to the percussion instrument support frame 22 . to secure a percussion musical instrument 100 to the support frame 22 , one or more of the tension lugs 108 are removed from the rim 106 and casings 110 . the percussion musical instrument 100 is then positioned within a curved recess 116 in the upper and lower instrument support plates 30 , 32 , such that the peripheral edges 114 of the support plates 30 , 32 abut the shell 102 . next , the percussion musical instrument 100 is rotated to bring the threaded bore 112 of at least one casing 110 from which the tension lug 108 has been removed into alignment between the upper and lower support plates 30 , 32 with a vertically aligned pair of bolt receiving bores 120 . the tension lug 108 is then replaced through the rim 106 , passing through a bolt receiving bore 120 in the upper support plate 30 , and threaded into the threaded bore 112 of the casing 110 . during installation of the tension lug 108 , one vibration isolation washer 123 is installed above the casing 110 and one vibration isolation washer 123 is installed below the casing 110 . while the two vibration isolation washers may be made from any resilient material , it is preferred that the vibration isolation washers 123 be made from neoprene material . a bushing 124 ( fig7 and 8 ) are placed into the opening within the rims 106 prior to installation of the tension lugs 108 . the bushing 124 reduces the friction between the tension lugs 108 and the rim 106 to provide a finer ability to adjust the tension in the tension lug 108 . additionally , the bushings 124 act to keep the vertical axial tension loads perpendicular to the upper surface of the rim 106 , thereby greatly reducing the tendency to create a bending moment in the tension lug 108 as the tension lug is tightened . while the bushing 124 made be made of any material which reduces the friction coefficient between the metal of the rim 106 and the tension rod 108 , it is preferred that the bushing be made from a brass material . it will also be appreciated that while the bushing 124 is part of the drum carrier 10 , the bushing may also be used on any drum percussion instrument having a rim 106 used for tightening a drum head 104 onto a drum shell 102 . a retaining bolt 122 is correspondingly passed upward through a bolt receiving bore 120 in the lower support plate 32 and threaded into the threaded bore 112 of the casing 110 , opposite the tension lug 108 . preferably , at least two casings are secured between the upper and lower support plates 30 , 32 in this manner for each percussion musical instrument 100 . in view of the above , it will be seen that the several objects of the invention are achieved and other advantageous results are obtained . as various changes could be made in the above constructions without departing from the scope of the invention , it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense .