In my books I list all of the possible causes.
Poor Attacks on Trumpet
- mouthpiece too small or shallow
- wrong syllable for tonguing
- lips too tight
Weak Stuffy Trumpet Tone
- too little air used
- too much pressure
- closed throat
Bright Shrill Trumpet Tone
- Mouthpiece too shallow
- Bad concept of tone
- Too tight
Dull Lifeless Trumpet Tone
- Mouthpiece too deep
- No tongue arch
- Wrong concept of tone
Forced Trumpet Sound
- Lips too tight
- Too much mouthpiece pressure
- Bad breath support
Weak Upper Register on Trumpet
- Chops too tight
- Too much pressure
- Wrong or no pivot
Weak Low Register on Trumpet
- No or wrong pivot
- Mouthpiece too small
- Not using warm air Haaaaa
Changing Quality of Sound
- Poor breath support
- Change in tongue arch or pivot
- Tonguing problem
Slow Response on Trumpet
- Too much pressure
- Poor breath support
- Lips too tense
Missed Notes
- Mouthpiece Too small or shallow
- Too much pressure
- Poor breath support
No Endurance on Trumpet
- Too much pressure
- No practice
- Mouthpiece too big or deep
Pops
