What exactly is the lyrical subject/object in poetry?

A lyrical
poem is primarily about emotions the poet has experienced. They try to recapture these feelings
in verse.

Almost always, these emotions are connected to some event, place,
or experience in the poet's life that gives them substance. It could be something traumatic,
like the death of a parent, that evokes the intense emotion, as in Dylan Thomas's "Do Not
Go Gently into that Good Night," a poem in which he implores his father to fight fiercely
for his life. The emotion could also be caused by loss of a child, as in Ben Jonson's "On
my First Son," in which he mourns the loss of his beloved young son, who meant more to him
than any poem he could write. It could also be as simple as the intense emotions experienced
when gazing at a vase, which Keats records in "Ode on a Grecian Urn," or from wishing
a butterfly would stay in his garden, as Wordsworth does in his poem "To a
Butterfly."

Whatever the case, the lyric poet conveys to an audience the
deep feelings he has experienced. In the best lyric poetry, we as an audience connect strongly
and passionately with these feelings and the language in which they are expressed.