Welsh cynghanedd group Carmarthen Bardic School is celebrating its 25th anniversary and hopes to publish a collection of poems written by past members.
It has helped train a number of National Eisteddfod winners including Mererid Hopwood, who tutors for the group, and Aneirin Karadog.
The lessons are held over a pint at the Carmarthen Quins Rugby Club.
Cynghanedd has bee present in Welsh language rhyming since the 6th Century, and developed into a complex set of poetic rules from about the 13th Century.
Geraint Roberts, one of the original members, said: "There's a very close correlation between the development of the Welsh language and cynghanedd.
"We set homework and that's a critical part of it - going over the homework, looking over mistakes and looking for ways of improving and developing."
One of its youngest members, 15-year-old Dafydd Llywelyn, said: "My forefathers learnt this craft and I want to keep the tradition alive."

In one case, reported by German broadcaster NDR, a shackled Moroccan man was allegedly forced to eat rotten pork off the floor at a police station.
Earlier, a policeman allegedly bragged on the WhatsApp messaging service that he had made an Afghan man choke until he "squealed like a pig".
The reports have shocked officials.
A police officer's home and workplace have been searched and investigators found a photo on his mobile phone showing a man being held down in a painful stress position.
Witnesses are being questioned over the alleged abuses, according to NDR.
The head of human rights group Pro Asyl, Guenter Burkhardt, said the allegations indicated "an appalling level of racism and inhumanity".
In one WhatsApp message, quoted by NDR, the policeman wrote: "I knocked him away. An Afghan. With an immigration ban. Stuck my finger up his nose. And he choked. It was funny. And dragged him in shackles through the (police) station. It was so great. Squealed like a pig. It was a gift from Allah."
An unnamed police source was quoted as saying "there was often screaming from the holding cells, and when it got too piercing they didn't look into it - they just shut the door, to stop the sound getting out".
The German government official in charge of integration, Aydan Ozoguz, called the allegations "shocking".
She said that if a policeman had actually tortured migrants then the police must "make it absolutely clear that they do not tolerate such inhumane behaviour in their ranks".
A group is calling on former members to contribute poems for a new book.
[NEXT_CONCEPT]
Prosecutors in northern Germany are investigating alleged cases of police brutality towards migrants in the city of Hanover.