This is going to be a short review since I can't find any info about this group. I believer the group Sleep Dealer is from Moscow and might be the work of one artist. The music, as the name implies, is mostly quiet post rock. Layers of guitar, bass and drums. It's very atmospheric and could easily be a soundtrack to a sci-fi movie. Some is has a classical feel to it. Many of their tunes start out quietly and slowly build. Interesting music indeed.
5 hours ago