What is in this image? Describe it as if you were explaining it to someone from the 15th century.

You would see a fantastical creature, a blend of familiar and the stuff of legends. This steed has the body of a noble horse but wears a contraption more akin to the armors of knights, albeit fashioned very differently. Most intriguingly, it possesses long, elongated limbs, not made of flesh but appearing as great spindles, possibly of metal, that push it through the skies, much like the way a bird uses its wings. From its back extends a long, straight spike, resembling a giant arrow, pointing forthrightly towards its destiny.Beneath this mythical sky-beast, you spy clouds akin to those that might gather before a tempest, and scattered around are curious objects resembling parchment torn asunder by a fierce gale, suggesting perhaps this creature is delivering messages through the heavens. It emits musical notes, suggesting it either sings or causes the air around it to resonate with melody as it travels. All this might seem a vision from an alchemist''s dream or a tale from a wandering bard.