Problem stated here is connected with music information processing, especially with Braille music notation. The main objective of this paper is usage of semantics for optimization of Braille music scores processing. This issue is important in the area of huge Braille music scores. Our approach is based on structuring – both syntactical and semantic – in spaces of music information. Optimization would not be possible without such structuring. The main idea is connected with logical score partitioning into smaller pieces that are weakly dependent between each other. Optimization is based on closing changes to small syntactical and semantic items of the structure. Each change during editing touches on of such small items instead of processing significant parts of the whole structure.