Classic Poem

Vain Bards! I can discover all,
What befel or shall befal.
I come seeking what is lost,
And my aim shall not be crossed.
Strong am I who this demand,
More strong my tongue than Arthur's hand
Three hundred potent songs & more
Are hidden in the strain I pour:
No foemen in these mountains dwell
On whom I cannot cast a spell;
Nor stone nor brass, nor iron ring
Can fetter Elphin when I sing;
All that I seek this hand can find,
All Gates unbar, all bonds unbind.