The Cloudy Day music is an Rare Fortnite music. Cloudy Day was available via the Item Shop for 200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Cloudy Day Skin Details
Press play and look up into the sky.
Fortnite Cloudy Day Skin PNG Images
Here is the PNG images of Cloudy Day below!