First of all, Mr. Bianchi, I would like to compliment you on another number executed with virtuosity and taste. Of course, I could say that about all of your performances; frankly, I would never have picked up a ukulele in the first place if I hadn't had the good fortune of stumbling upon your channel a while ago. Though your playing is more restrained in this ensemble setting, you continue to demonstrate thoroughly the marvels of which the instrument is capable.
To the point, however, I noticed that throughout the song there is a strange apparatus hovering near your lips. I presume you used it to achieve a classic "megaphone" vocal effect...but how exactly did you obtain or construct it? I'm certain such a device would be incredibly handy, and I yearn to know more about it. I hope you will be kind enough to respond to my query.
Once again, let me thank you for sharing this with all of us here at the forum and with everyone else who, like me, will discover its enchantment.