User blog comment:TheHandsomePlant/NMT Side B levels!/@comment-24735666-20150906115157/@comment-25089892-20150906120510

Well, it's rather fault of the game coding. If one jam activates in coding, there won't be any others identical jams in coding (they are hidden), despite activating later. So, some jams may play during the levels where I didn't state them.