This linguistic investigation assumes that the “balak” in Southern Leyte has distinct morphemic structures. This study is anchored on the theory of Linear Grammar by Pit Corder, Idealization Theory by Dr. Angel Pesirla, and Translation Techniques by Professor Amparo Hurtado Albir. This linguistic study investigates morphologically the selected local poems written by Southern Leyteño, native speakers. It seeks to uncover the process of raw data idealizations, word segmentation (free morphemes and bound morphemes), affixation (inflections and derivations), sentential relationship (lexical morphemes and grammatical morphemes), and how the syntactic structures are constructed by the immediate constituents and the rewrite rules of the idealized sentences, and the monograph on morphemic structures that can be proposed based on the findings. This research paper employs a qualitative descriptive design. Language description, specifically the morphological features of the selected textuality, is the primary focus of this study. It is done in three (3) phases: (1) idealization of raw data; (2) identification of the word segments (free and bound morphemes), affixations (inflections and derivations), and sentential relationship (lexical and grammatical morphemes); and (3) immediate constituents analysis and rewrite rules. The morphosyntactic analysis of local poems in Southern Leyte reveals that (1) there are fifty-three (53) idealized sentences constructed following the predicate sentence pattern of the selected local poems written by the Southern Leyteño, native speakers. (2) The linear morphologic word segmentation of the selected local poems by the Southern Leyteño native speakers reveals three (3) different word forms, verb and adjective word affixations, seven (7) types of derivations process, and contains lexical and grammatical morphemes. Additionally, the word formation processes in the local poems reveal three (3) morphemic metathesis. (3) The linear structuralization in the idealized sentences of the local poems reveals fifty-three (53) sentences that constitute the predicate sentence pattern based on the immediate constituent analysis and rewrite rules. Based on the findings and the conclusion of the study, it is hereby recommended that (1) the idealization of raw data may be the initial stage in any linguistic or grammatical structural investigation to promote and improve language skills. (2) The local poems may be good content sources for word segmentation, affixation, and sentential relationship analysis to aid and enhance learners’ language competence. (3) The proposed monograph on the morphemic structure may be utilized as supplementary materials in language teaching.