The OG (Future Remix) music is an Rare Fortnite music. OG (Future Remix) was available via the Item Shop for 200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite OG (Future Remix) Skin Details
Press play and follow this remix into the future.
Fortnite OG (Future Remix) Skin PNG Images
Here is the PNG images of OG (Future Remix) below!