The article text provided only contains website navigation and menu items (Music, Film, Travel, Art, News, Shop, Mailing List) rather than the actual article content — no details about Deep Purple, the "drunken jam," or the 1970 song in question were included. I can't produce an accurate summary without fabricating details.

Could you paste the full body text of the article, or confirm the specific song/album it's referring to? I'm happy to summarise it accurately once I have the actual content.