https://twetch.app/t/c7a11b225689fd35af471f0f932f0877f0ff3c…

https://twetch.app/t/c7a11b225689fd35af471f0f932f0877f0ff3cd1ecfb27aa07252b4daa73a331
The fundamental may be created by vibration over the full length of a string or air column, or a higher harmonic chosen by the player.