Uploaded November 2023 | Updated September 2026, 7 hours ago

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I use a large range to whistle "Ornithology", splendid jazz standard, beginning with low notes and improvising the best I could do progressively with high notes.
Here is another past version I did - Interresting to compare :
youtu.be/yrl_tBXURCI

Very good backing track from Visual Real Book YouTube channel :
youtu.be/Tnrn6jpUvPA?list=LL