"Ah..." is about all that Henry can say in response to such graceful, yet devastating shade being thrown at him. But! He clears his throat and does his best not to lose his stride.

"Aha... Yes, I am! I wrote and scored it all myself, using this software— uhh, I mean this tool— called Garage Band. It basically puts the power of a while orchestra at your fingertips!"

Meaning, it is the tool which allowed him to make not only this song, but a whole record full of geology-themed music.