The 8-bit Beat music is an Rare Fortnite music. 8-bit Beat was available via the Item Shop for 200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite 8-bit Beat Skin Details
Press play and go for the high score.
Fortnite 8-bit Beat Skin PNG Images
Here is the PNG images of 8-bit Beat below!