singing to no one in particular

there are birds that sing with two voices
blessed with a divided larynx
were they people they could hold
two conversations simultaneously
and both turn out right in the end

now i am expediently perched
for precisely such an attempt
except that there is no interlocutor
similarly gifted and the two songs
are not aimed at each other

such an animal is split in the middle
by an impenetrable plane
cutting off its left hand voice
from its right hand voice and the heart
from the heartless yet also singing side

but if we possessed two hearts
our blood would flow against itself
better stay as you are a useless warbler
whose two discourses addressed to the void
receive no response to either