He started auditioning at just FOUR years old... and now he’s taking over America's Got Talent! 🎙️✨ Watch until the end to see how much he's grown. Drop a ❤️ to support his AGT journey! #tiktokmilestonechallenge #AGT2026 #AmericasGotTalent #MackenzieSol #XFactor#Wherearetheynow