Muse, Siren

I’m very happy with how this turned out, far more than with anything I’ve written before:

Muse, Siren
Muse, Siren; thy strain does oft inspire
To poetic motion introspective,
To affections romantic and native,
That to Man I pleasurably expire.
Descant inarticulate; thence transpire
My sensibility. Music votive
To thee should I exhale, consecutive
Measures proffer, till I cease to respire;
Till insufflate affections relinquish,
While native aspirations fain recline
'Pon aphasic and narcotic poesy.
With barbiturate thou dost replenish;
Irrational motion thy mute design,
From which proceedeth saturninity.

Update
Maybe supplying some definitions would facilitate reading this. So:

Muse: (n) the deity traditionally responsible for poetic inspiration; (v) to behave as the Muse
Siren: (n) beautiful, woman-like deity, whose voice sailors heard at sea; the sailors, enthralled, would unwittingly run their ships into the rocks surrounding the Siren and perish
Strain: (n) music
Inspire, Expire, Transpire, Respire: (v) literally, breathe inward, breathe outward, breathe across, and breath back
Descant: (v) sing down
Votive: (adj) devoted
Proffer: (v) put forth as an offering
Insufflate: (v) breathe into, typically used in regards to inhaled medicine
Relinquish: (v) literally, leave again
Aphasic: (adj) injured so as to be unable to speak
Narcotic: (adj) inducing stupor
Poesy: (n) poetry; the inspiration to write poetry
Barbiturate: (n) a type of sedative and hypnotic drug
Saturninity: (n) depression, gloom, typically imposed by some outside power