The 67L is a very popular choice for 1½C players looking for more core in their sound with more secure articulations, in a more efficient design.

The 67.4C, approximately equivalent to a Bach 1¼, is also listed on this page, at the bottom.

67S GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• S cup: The versatile GR S cup can be used in varied musical situations. The sound is big and brilliant. Projection is excellent. The backbore is the GR #1, with good core to the sound. The S cup volume is small, though it has ample lip room for most players. This is an ideal solution to those who bottom out on conventional commercial cups. The alpha angle is not too high and does not impinge the lips; furthermore, it has the ability to lightly grip and keeps the lips held into place for great endurance. This cup is great for lead, show work, studio work, and all-around playing.

67MS GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• MS cup: has a slightly lower alpha angle, greater cup volume, a slight increase in cup depth, and a larger backbore---the GR #2---than the S cup. This is a great all-around cup with a huge, brilliant sound. The added volume and a slightly lower alpha angle give the player more lip room: an ideal solution for players who find that the GR S cup is a bit tight for them. The sound is big and full with an excellent core. It has less edge than the S cup and works well in all playing situations.

67M GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• M cup: has the same backbore as the MS Cup: the GR #2. The M Cup has a slightly lower alpha angle, more volume and depth and greater lip room than the MS Cup, though the playing characteristics are similar. Works very well in a variety of playing situations from commercial to concert work. An ideal all around mouthpiece with a compact core, vibrant feel, and full of overtones. This is the most popular GR cup.

67M2 GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• M2 cup: a slightly lower alpha angle (same as the MX cup), slightly more volume; the depth and throat entrance are the same as the M Cup. Playing characteristics are similar to the M Cup, but the alpha angle is slightly lower---a good option when more lip room is needed. Works very well in a variety of playing situations from commercial to concert work. The M2 cup is often used by players that play larger volume cups for most of their work but occasionally require more compression and sizzle without sacrificing lip room. Think of this as an M cup with more chop room. The M2 features the GR #2 backbore.

67MX GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• MX cup: more volume and more cup depth, lower alpha angle than the M Cup, and the large GR #3 backbore. MX is one of the more popular cups of choice for C trumpet, and is excellent on Bb as well. It is particularly well suited to students, part-time C trumpet players, and top studio musicians that want an efficient C trumpet mouthpiece. The MX cup offers more resistance than the VC or CX cups. It is popular for larger, less resistant horns and for light chamber work. The MX cup projects well; the tone is brilliant and very even throughout all registers; the upper register speaks very easily with precise intonation. Light articulation is very easy with the MX cup. If you are looking for a cup that is fat, precise, and brilliant, the MX cup is an ideal choice.

67L GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• L cup: a lower alpha angle, increased depth, slightly more volume than the MX Cup, and the large GR #3 backbore---low resistance with a clear, centered, huge fat sound, the #3 is ideal for everything from jazz to symphonic work. While the L cup is excellent for C trumpet, many players prefer the vibrant feel of it on the Bb trumpet. The sound is more present around the instrument with the L cup, where the MX cup projects with a sound that is more directional. The L cup plays very evenly throughout the registers and the sound is rich with resonant overtones. Preferred for Concert Band, Wind Ensemble, Brass Quintet, Chamber Work, Orchestral Work, Solo Work, and Jazz.

67LX GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• LX cup: a very large cup volume, increased depth, an alpha angle much lower than the L Cup, and a #3 backbore. This allows for a lot of lip engagement into the mouthpiece. A strong embouchure is required to control this cup and maintain endurance, but the pay off is a huge sound, a full spectrum of overtones, and an evenness and brilliance throughout the horn unmatched with "conventional" mouthpieces of a similar volume. Projection is excellent. Works well on the C and Bb trumpet. An outstanding orchestral and solo cup, used by top orchestral players the world over.

67VB GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• VB cup: has the same parameters as the VC for the rim and upper cup, but the throat entrance, bore, and backbore are tighter, so that the VB doesn't require as much work. It works well on the Bb for concert band to jazz work. It is also good the C trumpet. The VB cup was designed for players that find the VC too open.

67VC GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• VC cup: a special cup designed specifically for use on the C trumpet. It has the same alpha angle as the L cup. The upper and lower cup have a slightly larger radius, and a lower beta angle. This formula makes more of a V-shaped cup, but articulation and brilliance of tone are outstanding. The VC Cup was designed to project in the orchestra. The shape of the throat entrance is excellent for C trumpet. The sound is big and projects in a rich, brilliant manner; furthermore it is very easy to shade and color. The upper register is efficient and strong while the lower is warm and rich. The throat entrance, throat, bore, and backbore are a little more open than the standard MX, L, and LX. This cup can be played on Bb with good results, though it requires a very strong player. Many players use the 66L or 67L on Bb trumpet and the 66VC or 67VC on C trumpet. The VC cup is an excellent choice for symphonic applications and use in other large ensembles. It offers the serious C trumpet player a huge symphonic sound that really projects.

67C* GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• C* cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C* cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C* was designed for all-around Bb use, featuring a higher alpha angle (similar to M cup) and a larger cup volume. This design allows for added lip support and efficient playing characteristics throughout the range of the trumpet. The C* has an improved throat entrance over older, "conventional" C cup designs, which allows improved articulation, accuracy, and efficiency, along with a pure core of sound not found on most traditional mouthpieces. The C* cup has a beautiful, full sound with excellent projection, and the ability to blend in any situation. The C* will be a great choice for the student, amateur, and professional. This cup has been use successfully on the D/Eb trumpet as well as the C trumpet.

If you play very open, free-blowing instruments and require more resistance, an excellent option is the C* cup with the GR #2 Backbore. Please contact Thompson Music to place a special order, or indicate your choice in the comments section of the Shopping Cart page.

67C** GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• C** cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C** cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C** was designed to have a similar blow and feel to older, traditional C cup designs, while improving intonation, slotting, articulation and efficiency. It is an excellent choice for both the Bb and C trumpet, featuring a higher alpha angle (similar to M cup) and a larger cup volume. The design allows for added lip support and efficient playing characteristics throughout the range. The C** has a more open throat entrance than the C*, requiring more strength. It's a powerful cup that produces a great volume of sound, good articulation, and excellent projection. A good choice for the orchestra, concert band, solo work, or quintet.

67C GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• C cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C cups feature the GR Symphonic blank, Standard rims, and GR #3 backbore. The C has a more open throat entrance than the C* and C**; it requires a strong player. The C design features a high alpha angle (similar to M cup), a large cup volume, very open throat entrance, and huge orchestral sound. The design allows for added lip support and efficient playing characteristics. The C is a very powerful cup that has a great volume of sound, good articulation, and excellent projection. It is the preferred choice for the orchestra, as well as for very powerful players requiring a more efficient alpha angle.

67CX GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• CX cup: a very large cup volume, increased throat entrance, and an alpha angle that is the same as the LX cup. This allows for a lot of lip engagement into the mouthpiece. A strong embouchure is required to control this cup and maintain endurance. Sound is large with a full spectrum of overtones, even, and brilliant throughout the horn. The larger throat entrance and throat bore is a good match for the C trumpet and it has the large #3 backbore. Projection is good, although it has a strong presence of sound near and around the player. Designed for C trumpet players that use the LX cup on the Bb trumpet. An outstanding orchestral and solo mouthpiece cup.

67BX GR Mouthpieces
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .67" rim diameter, between a Bach 1½ and 1¼
• BX cup: similar to a traditional "B" style cup, it has a very open design and requires a strong player; it features the large #3 backbore. This mouthpiece is excellent on the C trumpet and has a brilliant tone that really projects across the orchestra hall. (Not recommended for players that use a lot of lip engagement.)

67C-T GR Trumpet Mouthpiece
• C-T rim contour: has characteristics of an old 1C, although certain rim parameters have been changed to make this mouthpiece more efficient.
• .67" rim diameter, between a Bach 1½ and 1¼
• C-T cup: designed for the C trumpet, but it is also a good match for certain Bb trumpets. The alpha angle is raised slightly to enhance articulation for a player that must work very hard to play a 1C style mouthpiece. The 1st cup radius, or R1, has been slightly increased over older 1C designs to increase efficiency and provide a fat vibrant sound. The throat bore is larger than the standard #27. The backbore is a #3 and a GR Classic Blank is standard. The 67C-T produces an incredible orchestral sound.
There is an option to have the 67C-T made with the GR Symphonic Blank, which is slightly shorter and has a more open blow. Please indicate this option in the Ordering Instructions box on the Shopping Cart page.

67B-T GR Trumpet Mouthpieces
• C-T rim contour: has characteristics of an old 1C, although certain rim parameters have been changed to make this mouthpiece more efficient.
• .67" rim diameter, between a Bach 1½ and 1¼
• B-T cup: all the same characteristics as the 67C-T, but the throat entrance has been adapted to accommodate the Bb trumpet.

67.4C 2.8 GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .674" rim diameter, approximately equivalent to a Bach 1¼
• The cup's alpha angle is medium-low and bite is a bit softer than medium, resulting in maximum lip freedom and ample support. This is a great orchestral mouthpiece for C trumpet with great projection, traditional sound and a full harmonic spectrum of overtones.