I'm afraid it's a little complicated, but you have to use somthing like this:
HTML:
<div class="nowrap">Cold flower heads are </div><div class="nowrap">raining over my heart.</div><br />
<div class="nowrap">Oh pit of debris, fierce </div><div class="nowrap">cave of the shipwrecked.</div>
CSS:
.nowrap {
white-space:nowrap;
float:left;
}
Demo: http://jsfiddle.net/jaAhk/2/ (Scale it!)
If you want to use it depends on how large the poem is, i guess.