Board Thread:Geometry Dash Update Discussion/@comment-26049807-20150417211025/@comment-25006695-20150417215212

Actually some Songs are Disallowed since they are Deleted on the Newgrounds Portal, that Occurs when the Song is stolen from a CopyRighted Artist (Rameses B may be One, so thats why the song was deleted on the Portal)

All the Songs who get Disallowed for Use (Except for Deadlocked) were deleted on the Main Newgrounds Portal, and Shut down its Use on the Game (Robtop may notices now the Copyrighted Music)