The Bach Standard Series Flugelhorn Mouthpiece in Silver Group II includes the following mouthpiece models: 9 9a 9b 9c 9d 10 10B 10-1/2a 10-1/2d 10-1/2e 10-1/2dw 10-1/2ew 10-3/4a 10-3/4cw 10-3/4ew 10-3/4cw 11a 11b 11c 11d 11dw 11ew 11-1/2a 11-1/2c 11-3/4c 12 12b 12c 12cw 17 17c 18 18c 20c When selecting a mouthpiece a brass instrumentalist should choose one with a solid compact tone of large volume. A carefully selected Bach mouthpiece can help improve a player s embouchure attack tonguing and endurance. Because no two players have the same lip or tooth formation what is perfect for one may be entirely unsuitable for the other. Bach produces many different models so that each player can find the best mouthpiece for their individual embouchure. A mouthpiece consists of the rim cup throat and backbore. Bringing these various components into proper relationship constitutes the art of superior mouthpiece production. In choosing a special combination of rim cup throat and backbore designs consider the effects of each. RIM Wide: Increases endurance Narrow: Improves flexibility range Round: Improves comfort Sharp: Increases brilliance precision of attack CUP Large: Increases volume control Small: Relieves fatigue weakness Deep: Darkens tone especially in low register Shallow: Brightens tone improves response especially in high register THROAT Large: Increases blowing freedom volume tone; sharpens high register (largest sizes also sharpen low register Small: Increases resistance endurance brilliance; flattens high register BACKBORE Except in general terms it isn t possible to identify backbores by size because they also vary in shape. Various combinations of size and shape make the tone darker or more brilliant raise or lower the pitch in one or more registers increase or decrease volume. In each instance the effect depends in part on the throat and cup used in combination with the backbore. Key To Trumpet Cornet and Fluegelhorn Model Numbers: Bach trumpet cornet and fluegelhorn mouthpieces have been numbered in an orderly progression from the largest to the smallest diameters and from the deepest to the most shallow cup each with a choice of rim designs. Rim shape is described for each indi- vidual model throughout the catalog. Model numbers progress numerically from model #1 with the largest cup diameter to model #20C with the smallest cup diameter. Cup depths are notated with letters. A cups are the deepest; standard cups have no letter designation; progressively shallower cups are marked B through F. A Models have very deep cups #24 backbores and emit a large dark sound. Models with no letter designation have deep cups #10 backbores and produce a rich full clear tone. B Models have medium deep cups #7 backbores and have a full Teutonic tone with great volume. C Models have medium cups #10 backbores and are preferred by many players that alternate between B™ C and D trumpet. D Models have medium-shallow cups #76 backbores and produce a sparkling brilliant tone especially in the high register. Artists who continually play in the extreme high register use them to advantage. E Models have shallow cups #117 backbores and are designed for use on soprano and piccolo trumpets. Also preferred by extreme high register players. F Models have extra-shallow cups #76 backbores and are also preferred by extreme high register players. V Models have V style cups. V designates a very deep cup #20 throat and #25 backbore; MV designates a medium deep cup #25 throat and #25 backbore; SV designates a shallow cup #25 throat and #25 backbore. W Models have a wide cushion rim for soft thick lips.