Oceania
Oceania, alternatively known as The Endless Longing of Sea Doves is a nearly solved Lostwave. It was firstly appeared on the web because of 1993 Dead Can Dance bootleg album "The Golden Age" and mostly considered as a misattributed to Dead Can Dance. However, it's almost fully proven that it really originates from Dead Can Dance concerts of December 1988 in Hamburg and Paris as an opening act, being the only appearances of the track. According to tracklist it's called "Oceania" and the duration is about 20 minutes. Among with some other DCD tracks, such as Awakening, Ocean, and others, it is never released and appeared on various bootleg albums.
Oceania was considered as the longest Lostwave song.
Background
In August 28, 2012, Alfredo Brvxias Fanzine uploaded the song from a bootleg to SoundCloud, with the title Dead Can Dance - The Endless Longing of Sea Doves. The user hex commented that it's not a song of Dead Can Dance, and adding that "It is commonly known that the bootleger made a mistake". This made a speculations regarding the misattribution of the song.