Bach 9D vs Kelly SCREAMER
The Bach 9D has a wider cup diameter, the Bach 9D has a larger throat opening.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Bach 9D
• Cornet
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Kelly SCREAMER
• Cornet
LeadMaterialLexan polycarbonate
Best suited for
Lead / commercial — shallow cup for brightness and range
Screamer / high notes — tight throat with shallow cup
Lead / soprano cornet
Material
The Bach 9D is described as unspecified, and the Kelly SCREAMER as Lexan polycarbonate. Material affects mass, warmth, and how quickly the piece responds.
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.