I feel like Sneaky would sing this which represents the aftermath of the War.
"We got carried away, carried away...."
Patty puts up her old military equipment before looking at an old picture of her and the Team before Mouse, Sneaky and Beatrix died and breaking into tears.
"Got carried away, carried away...."
Beatrix in a field of flowers staring at the sky having a regretful expression on her face.
"Carried away (Lost in the fantasy), carried away (Of all we were gonna be)
Flippy recently just moved to Happy Tree Town and was struggling to get settled with the traumatic memories sticking on to him.
"Carried away, carried away...."
Mouse couldn't bare to see Patty and Flippy depressed since they both assumed that either Flippy died or Patty died which made him take off his hat with an upset expression.
"It was lovely while it lasted....it was never meant to stay...."
Sneaky (who is the one singing) looks down at an old picture of the Ka-Pow team in Grade school....
"But we let ourselves get carried away...."
He then puts down the picture and looks down at the floor....
"I guess I let myself get carried.......away...."
Tears start rolling down his eyes for the first time before collapsing to his knees, covers his eyes and starts sobbing quietly with Mouse comforting him....