The valve section of the cornet is two thirds down the length of the tubing whereas the trumpet valve section is halfway down its length (plus or minus a little bit). Maybe the straightening of the cornet by one turn to more closely approximate the silhouette of the natural trumpet helped in having these new chromatic trumpets accepted. When 19th century composers were calling for chromatic instruments, these parts went to the cornets because at that time trumpet players were insisting on keeping their valveless “Natural” trumpets. To this day Vincent Bach cornets are offered with #25, #31 or #37 bells which are some of the same bell shapes offered on their trumpets. I have been told that when French Besson were designing their trumpet they used the same bell mandrel to make the bell as they were using for their cornet. The tapers of the lead pipes and bells of both these instruments are the same. Both the measured instruments have bores starting at around 0.335” at the mouthpiece entry, 0.459” though the valve section, and 4.8” at the bell. Both instruments have roughly the same proportion of tapered to straight tubing as the accompanying graphic shows. Many think that the tubing of the cornet is conical whereas the trumpet is cylindrical. The cornet has two more half turns than the trumpet. Anyone who has experimented with different shape main slides on their trumpet will have experienced the great effect that these different shapes can make. The cornet looks shorter because the tubing of a cornet is coiled into two complete turns whereas the trumpet has only one. Yes the silhouette is shorter but the tubing lengths are identical. Both instruments play the same pitch indicating that their lengths are the same. The cornet looks to be shorter than the trumpet. This is the commonly accepted view, but, as I have observed, not correct. We were told that cornets are tapered and trumpets are cylindrical. Being terrified by these regulations, we young cornetists wondered what the difference actually was between cornets and trumpets. Dance band at that time equalled trumpet, and playing the trumpet was regarded as heresy.
Olds cornet receiver size registration#
If anyone was discovered to have been playing for money, in a dance band for instance, they would have their brass band association registration revoked, and would not be allowed to participate in such events as contests. When I started playing the cornet in NZ in 1958, the brass band community was vehemently “anti professional”. Here is the text What is the Difference between a cornet and a trumpet? I have expanded on this and posted a blog.
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