Bacewicz’s In Una Parte for Symphony Orchestra IGB 20 is a concise, single-movement work that employs modernist techniques typical of her later style. It is structured around clear rhythmic patterns and focused thematic development, with little reliance on traditional multi-movement forms.

The orchestration is carefully balanced, with distinct instrumental groups engaging in precise counterpoint and dynamic contrast. The work’s construction demands high levels of ensemble coordination and clarity in execution, highlighting Bacewicz’s interest in integrating avant-garde methods with controlled formal structures.

Overall, the piece represents post-war Polish modernism, reflecting a disciplined approach to orchestral writing that emphasizes economy of material and structural precision.