Bards’ works celebrated heroic deeds of their patrons.
The knowledge of poetics was thought to be an inherent part of bardic craft.
Bards learnt in special bardic schools, where the main emphasis was put on mastering rules referring to strict metres.
The reason for that is that the poetry written with the use of strict metres was perceived as “the major glory of Welsh literature”.
[1] A trained aspirant could become one of the 3 types of bards: As Sir Thomas Wiliems stated,[citation needed] it was Einion Offeiriad who developed the medieval Welsh bardic grammar, which can be separated into two parts: According to some manuscripts, two parts of speech can be distinguished in Welsh bardic grammar: noun and verb, whereas syllables were divided into trwn (heavy - two consonants at the end) and ysgafn (light - a single consonant at the end).