No, it is not cellular network generation, it the highest sound I was able to play. Today.
And even couple of harminic scales from 2F up to 3C/2G. Still usually can not play higher than 2F in the melody, but can run an upstairs scale now.
3G and other highest tones were produces by rounding bottom lip in and covered by the upper one. IIRC it is part of the Maggio technique, although I’m not really sure what school I play. It was fun to make that high tones, but I do not like the sound – it is rather empty, without interesting overtones. Main purpose for my level in playing in the third octave is to be able to play in the second octave very stable, which is not yet the case.
Added another exercises into the small set of various melodies and hear developing interval playing – playing with metronome (thanks to highpower@). I set it to 92 and play harmonic upstairs/downstairs scale for each 4′th tick in the first octave. I play either 4 same sounds with clear attack per tick and switch the tone after 4′th tick, or make the same tone for 4 ticks without interrupt and then switch it. Found that I can not play whole octave on a single breath, but that’s mostly my wrong breathing, since I sometimes feel when air goes through the mouthpiece without producing a sound. Apparently lips are not very strong yet, but eventually I will develop this.
What’s next interesting thing this day is about to bring?