Jun Senoue on The Best of Crush 40: Super Sonic Songs:

What I’m Made of…

Among the songs of Crush 40, this is the one that I like the most personally. I like it so much that there is nothing I dislike no matter which part—riff, vocal melody, chorus, bridge, and solo—I picked out. Actually, it’s a song made in the foremost stage of Sonic Heroes, but it was unpopular from all directions at that time and I put it away. I wanted to use it no matter what, and what’s more, I had the confidence that it was suitable, so there were a sequence of events where I brought it in for the second time as the song of Metal Sonic battle in the latter half of the project. I am really glad it became a song that we could record at last!