| Is this Josu? If so, welcome to TM and it's great to have a Basque colleague here! If not, forgive me and welcome to TM all the same...
Intonation on the piccolo trumpet is very dangerous due to the shortness of the silly thing, and resonance is greatly effected by intonation. Couple this with far fewer overtones due to being an octave closer to the fundamental and, ole!, we have something resembling a shrill baby crying.
Tension is certainly the first place that I'd look if your pitch is wildly innacurate.
Have you tried playing Clarke studies (in all of the keys, please) slowly in mezzo piano? Listen carefully to intonation. Fortunately Stomvi gave you an extra valve. Spend time matching pitches at the piano and determine which alternate fingerings using #4 work best for you. I'm constantly astonished how few trumpet students have made the effort to figure their piccolo trumpet out (!)
Lastly, consider the old Stamp axiom: as you go up, stay down. Think horizontally, not vertically.
Best and watching here,
EC |