Which you prefer (e.g., Spotify, Bandcamp, YouTube)? If you are looking for a free or paid high-res version?
On the Guitar China forums, a user named "liquidwei" uploaded a highly popular GP5 (Guitar Pro 5) file titled Pegasus Fantasy (Neoclassical Version) . This is widely considered the gold standard for musicians trying to learn Demian’s arrangement. Downloading this tab and playing it through Guitar Pro will generate the audio based on the notation. Which you prefer (e