“I’m Proud of You, Buddy” — Mike Fisher Breaks Down as Son Joins Carrie Underwood in Surprise Father’s Day Duet. It started with small, shaky steps onto the stage. Then Carrie Underwood’s piano filled the room. No one saw it coming—her young son, nervous but brave, began to sing. The crowd went still. In the front row, Mike Fisher watched, already holding back tears. As the boy sang louder, Carrie stepped aside. And when he ended with, “Dad is my hero,” Mike broke. Hand over mouth, tears streaming—he couldn’t hide it. The crowd stood, not just clapping, but feeling something bigger. In that moment, it wasn’t just a song—it was love, pride, and a father’s whole world in one little voice.