How can lightning make music? Educator Lauren from the Museum of Science, Boston, breaks it down using two giant Tesla coils—machines that create sparks like lightning. In a storm, thunder is the sound of one big spark. But Tesla coils can create hundreds of sparks per second. When those sparks happen too quickly to hear individually, they blend into a steady sound—just like thunder. By changing how many sparks happen per second, we can change the pitch of that sound—and play music with lightning.