Though unseen Poets, many and many a time,
Have answered me as if they knew my woe,
And it might seem have fashioned so their rime
To be my own soul's cry; easing the flow
Of my dumb tears with language sweet as sobs,
Yet are there days when all these hoards of thought
Hold nothing for me. Not one verse that throbs
Throbs with my heart, or as my brain is fraught.
'Tis then I voice mine own weird reveries:
Low croonings of a motherless child, in gloom
Singing his frightened self to sleep, are these.
One night, if thou shouldst lie in this Sick Room,
Dreading the Dark thou darest not illume,
Listen; my voice may haply lend thee ease.

Wilfred Owen

http://www.poemhunter.com/poem/on-my-songs/