YouTube

Every Pronoun has at least one Tube, be it You or Me. Unfortunately your tube is taken and belongs to Alphabet Corporation. Not to worry, though: there are plenty of other tubes to go around. Some things, like the Windows Screensaver Library and The Internet even have tubes despite not being pronoun-related.

You

Your Tube was made a while ago. After fomenting in the primordial oceans, it was adopted and made cultivar by TubeMother (known by many names including “Alphabet Corporation”). In the pursuit of growth at any cost, Your Tube was engineered to reach out with long fibrous tendrils and bond irreparably to the fragile psyche of mankind. Long story short now we have Mr Beast.

Instrument

You can play a tube to make Music. The longer the tube, the lower the Music. The shorter the tube the higher the Music until it basically goes away and you can’t even hear it any more. If you can’t afford a tube, but have access to a Computer, you can use digital waveguide synthesis to simulate the wonderfully resonant sounds of a digital tube. Synthesizers like Ableton Live’s Collision offer this functionality.