A popular English form the Roundelay originates to the time of Chaucer. Consisting of any number of quatrains comprised of two couplets, the second couplet is the common rhyme within each stanza and the last line of that couplet is also a refrain.
This gives the following rhyme schema
aabB ccbB ddbB and so on.
Example
Celtic Nightmare Divena Collins
Bleak was my outlook within castle walls
But heard voices that echo`s ghostly calls
So dark was the dungeon I could not see
I ran to the entrance but found no key
A violent storm blew through the dark night
Dank was the dungeon devoid of all light
Alone and frightened I was destined to be
I ran to the entrance but found no key.
I in my destiny felt a presence so near
Why in my dreams should I suffer fear
But Oh in my heart I wished I was free
I ran to the entrance but found no key.
A putrid stench of death breathed within
Entombed in a dungeon how could I win
Who did it belong to mayhap it was me
I ran to the entrance but found no key.
Dark was the night of the ravens loud call
Death he sang shall but come to us all
Perched upon the bough of a willow tree
I ran to the entrance but found no key.
Gone was the fear of that night of sorrow
Haunt our dreams like there’s no tomorrow
When spirits of the darkness so violently
For a fantasy entrance beheld no key
Jezzie G 