Purpose of Article - description of the semantic features of the hard-and-heavy musical composition in artistic and pedagogical aspects - the following tasks are specifically applied: individual perspectives of the study of semantics in rock music; need an organization theme), describe the structure and semantic model of hard and heavy compositions. Methodology relies on an integrated approach with the use of system-structural, functional and comparative methods, which allows to explore the characteristics of musical composition's semantics in hardand-heavy at the intonational-thematic, genre, compositional levels. Scientific novelty consists in describing the models of the structural and semantic organization of hard-and-heavy compositions on the basis of a study of the processes of shaping, thematic and structural organization. Hard-and-heavy uses various types of forms - from simple to complex, mirror-symmetric, open, alternative, which are based on one of the three types of thematic organization: monoriff, polyriff, spiral. Structural models of hard-and-heavy musical forms emerge based on the interaction of genre features of vocal and instrumental music. Each structural model corresponds to a generalized semantic model with a specific range of values. The guiding lines for semantic interpretation are representations of typical forms. The semantic model of a typical hardand-heavy composition has several particular models that play the role of a meaningful scenario, define the functional and dynamic profile of the piece, and create the semantic field of this form. Semantic analysis of the rock-piece`s form, as a component of the operational level of artistic and pedagogical analysis, provides an awareness of the joint action of the means of musical expression in their interconnection and conditionality of content. It reveals the structural features of a piece of music, facilitating the process of perception and providing active influence of musical images on the listeners