Thanks to the master trumpet player... I really think that an "old" instrument like a keyed trumpet, could revive, thanks to precision technology of nowadays. If in far East they could make the FIRST working plastic tenor saxophone... why not a renewed keyed trumpet? Maybe the last could not work well if made in plastic (much better with other materials, I could suggest metal parts for mechanics). PS: the experimental "prototype" trumpet works very well. From an "amateur" former guitarist, from Italy.
Well if it's pitched 440, It's okay, but also the modern instruments are very similar to their transitional counterparts in the same era. Though to note, the strings may have been tuned to 430 instead of 440 to compensate, while seems like the parts don't cause too much problems. The Keyed Trumpet I find sounds BETTER than the valves.
Sehr geehrter Herr Rufer, das tut mir leid und sei nachträglich herzlich verdankt! Wir erhielten die Aufnahme im Zusammenhang mit unserem Faksimile bei Edition Bim, die die handschriftlichen Varianten enthält, die Markus hier spielt.