Upon further review,
my subconscious has decided
that it is not so simple
as to be up to One
to chose One's [artistic] medium:

Music and Language are not my mediums,
I am a Medium for Music and Language.

It is not so much that One works within the medium of One's choice,
as it is that the medium made One the Medium of it's choice.

Skill, practice, patience and self-discipline;
steer One towards a certain medium,
help One be more receptive to a certain medium,
and make One a more fitting Harbinger of the medium,
so in time:

As One immerses oneself in a medium,
the medium envelops One in return.
One becomes one with the medium,
One is now a Medium.