What is the importance of the musicality of the rhythm in "The Raven"?

One of the reasons why
this poem is so incredibly well known and famous is the way that it is almost song-like in its
rhythm and music. It can be compared to many songs because of its evocative rhythms, , rhymes
and other sound effects that make it memorable. Remember that unless we hear poetry we are often
not able to fully comprehend what the poet is really doing through the sound of the words and
their rhythm.

In...