I have a feeling this is going to not quite fit into your thread because I'm not sure if any trader has them; but I'd like to have a mess around with the multitracks that have been previewed in documentaries over the years. A lot of these documentries are on TV but some used to feature on a show on BBC 6 music. Only a handful are on Youtube but there was Pink Floyd, Meat Loaf and 10cc to name but a few. There was another TV show that featured 80's electronic music, and the lead singer of Orchestral Manouveres In The Dark (OMD) played dry snippets of some tracks of Enola Gay.