This is a very long track from the now deleted Klaus Schulze-Box "Silver Edition"
It is a 60 minute-edit of a track original 73:51 minutes long - and part 2 of a piece called "Meditation", which in all lasts over 2 hours and 27 minutes.
It is one of the darkest pieces Schulze produced - the track was positively used for mediation at Guttemplerorden, a German institution for therapy to help alcoholics.