On the surface superficial joy in rhyming interstitial, 

There is nothing artificial in the poem here in store— 

Not a stanza injudicial in the poem here in store. 

                                                   Quoted here for evermore. 

Notes (words are defined in the sense they are used in the poem): 

surcease: an end 

obeisance: gesture of respect 

mien: appearance; attitude 

Pallas: Athena, the Greek goddess of wisdom 

Plutonian: of Pluto, the god of the underworld in classical mythology 

nepenthe: potion of forgetfulness 

is there balm in Gilead?: echoes a Biblical verse, "Is there no balm in Gilead?" where this is a rhetorical question (Gilead being a place that was known for its healing balm), so to the effect of, "isn't there healing to be found where there's given to be?" modified here to, "is there healing to be found where there's given to be?" 

Aidenn: Eden; paradise 

Music: https://www.purple-planet.com