@ Alan Ross, I opened this track and in the non published version there is a piano at the beginning but in the published version there isn't, is that what you mean? Weird because I've never noticed it in my tracks.
Fun fact: If you open the track in the Audiotool and compare it to the published version you will discover that both versions differ at the beginning. All tracks have this difference, yet it is nearly always so subtle that hardly anyone noticed it. We will fix it in the next update. In the meantime try and see if you can find the bug and under what circumstances you can trigger it. Enjoy :)