Sorry, the Schubert song is called "Litanei auf das Fest Allerseelen".

Of course, "Der Erlkönig" is a song too--or two magnificent songs, by Schubert and by Loewe.

For a poem less familiar (and maybe better) than "The Cremation of Sam McGee" and "The Raven", how about "The Griesly Wife"? By an Australian whose name escapes me, unless it's John Manifold. There's also the Poe parody, "Cannibal Lee".