This article is within the scope of WikiProject Rock music, a collaborative effort to improve the coverage of Rock music on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Rock musicWikipedia:WikiProject Rock musicTemplate:WikiProject Rock musicRock music articles
This article is within the scope of WikiProject Germany, a collaborative effort to improve the coverage of Germany on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.GermanyWikipedia:WikiProject GermanyTemplate:WikiProject GermanyGermany articles
I don't have sources, but there were 4 demo songs. As far as I remember they were released separately. First one was All The Children Sing+Black Gold and second one was that one which had Thunder and Lightning. Maybe archive.org would help. I think it was on their website. I don't have time to search for it now, so I'm just giving a tip. Krzysiu (talk) 02:00, 15 September 2016 (UTC)[reply]
After two years, I want to clarify. The existence of it can be proved (e.g. YouTube, interviews), but not the moment of release. Krzysiu (talk) 00:01, 12 July 2018 (UTC)[reply]