I was screwing around the other day playing the leadpipe and noticed that there appear to be certain harmonic “slots” to the leadpipe just as there are when the tuning slide is inserted and the trumpet is complete (but far fewer).
I didn’t spend too much time doing it, but for me it seeemed that there were about 3 slots–a low, a middle and a high, which was a bit tough to reach for me, even though I had a good day and was able to chromatically ascend up to E or F above high C that day.
It seems as though it would make sense that being able to reduce the aperture size / change shape to hit these different “slots” would correspond to achieving certain range levels on the trumpet–with the tuning slide inserted.
Are there any direct correlations between these 3, or however many there are, slots and the harmonic series on the trumpet that would be meaningful to know?
Or is it best to just keep it simple and play the trumpet with the tuning slide inserted?
I went back and watched 1 or 2 of the leadpipe videos, but they didn’t seem to cover this specifically.