Neither right nor left

I am the poet who teaches the stage its light
From behind the scenes
I am the concerto of a suicide swan
Applauding the greatness of its melody
Blind cadre..!
I paid the price of admission
And lost myself
In exchange for my right..!!
I am a purple collection
Which folds its reader with it
Dries it
A sad flower
I am the cover that fingers crave
And ends
Swallowing it..!!