Tomoya Ohtani on Sonic Generations Original Soundtrack:

Crisis City

During the production of Sonic the Hedgehog (2006), which became the 15th anniversary title of Sonic’s birth, I remember that I was considerably troubled at composing the music of Crisis City, which I made foremost. If I remember correctly, I should have the rejected versions several times…. It turned out that I would rearrange the composition that had such past trauma (laughs), and I decided to try to face the carried concept of that time again. In Act2 (modern), I wanted to determine the arrangement like further expanding the direction of the original version, leaving the keywords such as feeling of tension, feeling of epic, etc, I tried to make all 12 strings players, who increased the formation and the stressful beat that has the speed sensation, as the lead, and finished it as a grand and dramatic arrangement. On the other hand, in Act1 (classic), I tried to be aware that clear contrast is attached to both modern and classic arrangements, alter the tempo and grooviness from the gameplay feeling, and completed the ripping synthesizer and the guitar not inserted into the modern as the lead. Mr. Susumu Nishikawa’s guitar has become a good accent, so I recorded the arrangement for high speed use. It turned out that I would again remake the composition that I had made very worriedly and it was the mood in which I am being tested the level of 5-year growth.