What's the Difference?

What's the Difference? a song by Optical on BeMusic

Raging Calm by Optical,
Slip-Thru by Optical,
Moving 808's by Optical,
Dark Skies by Optical,
Hitek-Dreams by Optical,
To Shape the Future by Optical,
To Shape the Future - Remix by Optical,
The Shining by Optical,
Swift Glide by Optical,
The End, Pt. 1 by Optical,
Simple Man - Optical Remix by Optical,
What's the Difference? by Optical,