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/