お馴染みProgsphereからのコンピ17弾。 Progstravaganza XVII: Progression | Prog Sphere 1.Bad Salad - Deep Roots 08:25 2.Edison's Children - The Seventh Sign (Single Edit) 07:08 3.Iridic - Catharsis 04:40 4.Kosmoratik - Anchor and Compass 05:…