of stanza only; and if we represent one by the letter A and the other by the letter B, the successive stanzas of the whole Ode will be represented by the sequence AAB, AAB, AAB, &c. The rationale of this structure is simple enough. The Ode was to be sung by an advancing procession of dancers, whose dance consisted of a succession of similar figures, each figure being followed by an interval of rest. For the sake of symmetry it was arranged that each figure should be subdivided into two exactly corresponding halves, every step and gesture of the first finding its reflex in the second. The first half-figure was called the "Strophe" or Turn, the second the "Antistrophe" or Return, and the period of rest between the figures the "Epode"—i.e., the Coda. These natural divisions of the dance were regulated by corresponding changes in the music: the melody which accompanied the Strophe would be repeated da capo for the Antistrophe, and a second theme would be introduced, to fill the interval of the Epode while the dancers rested. The Poem, adapting itself to the requirements of this arrangement, assumed the form we have above described: the balanced rhythms of its Strophes and Antistrophes answering to the evolutions of the advancing dancers, while the Epodes were sung during their halts. In the "Pindarick" odes of Gray—The Bard and The Progress of Poesy—a similar structure has been applied with good effect to English versification.
In short processional Odes, circumstances sometimes made it unnecessary or undesirable that the progress of the Chorus should be broken by halts.