A. Check if the app has a setting for managing downloaded content. Sometimes, apps automatically delete files to free up space. Look for any settings related to storage management within the app. If the songs are not recoverable, consider re-downloading them if you have access to the original source.

B. Ensure that your iPhone has enough storage space. Go to Settings > General > iPhone Storage to check available space. If storage is low, consider deleting unused apps or files to free up space.