Cynghanedd lusg is a form of Welsh poetic technique that involves the use of internal rhyme and alliteration. It is characterized by a specific pattern where the last syllable of a line rhymes with a syllable within the same line, creating a musical quality. This technique is often used in traditional Welsh poetry to enhance the rhythm and flow of the verses. In cynghanedd lusg, the internal rhyme typically occurs in the second half of the line, making it distinct from other forms of cynghanedd. Poets employ this technique to add complexity and depth to their work, allowing for a rich auditory experience that complements the themes and emotions expressed in the poetry.