A canto is a major section or division of a long poem, especially an epic or narrative poem. It works much like a chapter in prose, helping organize a large work into manageable parts and marking shifts in action, scene, or theme.
Some long poems are built entirely from cantos, such as The Divine Comedy and The Cantos.
It is one of the divisions of a long poem, a convenient division when poetry was more usually sung by the minstrel to his own accompaniment than read. In music, the canto, in a concerted piece, is that part to which the air is given. In modern music this is nearly always the soprano. The old masters, however, more frequently allotted it to the tenor. Canto fermo, or cantus firmus, is that part of the melody which remains true to the original motive, while the other parts vary with the counterpoint; also in Church music the simple straightforward melody of the old chants as opposed to canto figurato, which is full of embellishments of a florid character.
The subdivision of a long narrative poem e.g. in The Divine Comedy by Dante. Spenser was the first English poet to use cantos. The Cantos is a long (some would say too long) poem by Ezra Pound. The subdivision of a long narrative poem e.g. in The Divine Comedy by Dante. Spenser was the first English poet to use cantos. The Cantos is a long (some would say too long) poem by Ezra Pound.
Example
Canto I
The road turns east where the river widens;
Canto II
Night drops its cloak across the hills.
Canto III
By dawn, the wanderer has crossed the pass.