Musical Score Display Apparatus with Multi-Level Complexity and Timeline Comments

The display apparatus dynamically adjusts which musical score parts are displayed based on the selected display level. At lower levels, only practice parts are shown to aid performance improvement. At higher levels, all parts of the composition become visible to satisfy users who want to view the complete work, thus adapting to different user needs without compromising the core performance improvement function.

The creation date information is displayed in a temporal dimension separate from the main musical score content. Rather than cluttering the score display with dates, the system uses a timeline or metadata area to show when advice information was created, preserving interface simplicity while preventing information loss about comment timing.

The musical composition is segmented into multiple display levels, where each level represents a different degree of completeness. Users can select from discrete levels (e.g., level 1: practice part only, level 2: multiple parts, level 3: all parts), allowing the system to manage display complexity through structured segmentation rather than presenting all information simultaneously.

The creation date is automatically recorded and stored with each comment data entry at the time of creation, before the user needs to view it. This preliminary action of capturing temporal information simplifies the data retrieval process while ensuring that information transparency about comment newness is maintained without requiring complex data structures.