This heartfelt ballad was inspired by the Perry siblings' mom, Marie. "That was the most honest song we wrote for Pioneer," Kimberly Perry said to Billboard magazine. "We were relaxing, and going through some song ideas. Neil had this one line written on his phone, 'If the world had a mother like mine.' We are started to think about what the world would look like if our mother had raised it the way she raised us. The opening line of the chorus says 'The wars would all be over, because she'd raise us all as friends.' Our mother is our personal hero. We are her labor of love. It's our honor to our mother on Pioneer."
Angus Young created the distinctive opening guitar part for "Thuderstruck" by playing with all the strings taped up, except the B. He learned the studio trick from his older brother George Young, who was the rhythm guitarist for The Easybeats.