Bach 8½A vs Kelly 4B-UK
The Kelly 4B-UK has a wider cup diameter, the Kelly 4B-UK features a deeper cup, the Kelly 4B-UK has a larger throat opening.
Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.
Mouthpiece A
Bach 8½A
• Cornet
Finish—
vs
Mouthpiece B
Kelly 4B-UK
• Cornet
OrchestralFinish—
Best suited for
High-volume projection — open throat for power
Professional cornet; British brass band
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.