Three tracks of concentrated Monster Hunter 4 energy packed into a tiny bonus disc. This was a 2013 pre-order extra for the 3DS release, and it's about as limited as soundtrack releases get. With only three tracks, every second has to count, and they pull from the orchestral intensity that defined MH4's shift toward more cinematic storytelling.
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The 3DS hardware pushes its audio capabilities here, delivering something that punches above what you'd expect from the handheld. These are the kind of arrangement pieces that reward headphones over the 3DS speakers. Bonus CDs like this exist in that weird collector space where the music itself is fine but the scarcity is the real draw.
Physical copies are basically impossible to find now. For Monster Hunter completionists who need every last piece of the discography accounted for.