As another commentator wrote, I've nothing new to say that was not said in the previous 100 comments. Except that Miss Trystal Wright and Australia should be delighted to be celebrated in such brilliant way...
Note of the translator:
A possible interpretation. The « horn » is the compulsive wish for
publicity and long-lasting acknowledgment (“ivy wreath') with which the
author of speculative poetry (« leader of the horsemen of the wind »)
may be possessed, but to which he should prefer relative anonymity
(night) , or he will run the risk of enslaving (“shackles”) his genuine
inspiration and talent (« dream », « guitar ») to transient trends and
fashions (“laws” and “flaws”) , just to comply with the prevalent
economic priorities (“the living” and their “plaster” and their “cities”)
or marketing devices ('echo', 'ladder') aiming to hold chance in
check ('too great odds', 'parodying the gods') .