It seems that folk are having issues with Collection across devices. Either it has disappeared completely or "Albums" is missing. This has been escalated to the staff. Please keep an eye on this thread for news.
There was one single, released by Martin Rolinski in 2013, called On The Run, and it's unavailable in Sweden (that's very ridiculous). Could you tell me please, in which country it is available? I found this link from the Google Search cache - https://open.spotify.com/6WmwSKZqIsijJYHkPmaDKe