Original sentence: The Frozen Borderline - 1968–1970 is a two-disc compilation set of music by Nico, comprising The Marble Index and Desertshore.The last (fourteenth) track of the second CD contains a hidden fifteenth track after ten minutes of silence, which is an alternate version of "Frozen Warnings" (a song from The Marble Index).The two CDs contain remastered versions of all songs from these albums, as well as several bonus tracks, which includes two previously unknown songs
Edited sentence: Lyrics and liner notes.Rhino Records' page about the album.The Frozen Borderline - 1968–1970 is a two-disc compilation set of music by Nico, comprising The Marble Index (recorded in 1968, released in 1969) and Desertshore (recorded and released in 1970).The last (fourteenth) track of the second CD contains a hidden fifteenth track after ten minutes of silence, which is an alternate version of "Frozen Warnings" (a song from The Marble Index) without the tremulous harmonium, leaving only her vocals and the violins.The two CDs contain remastered versions of all the tracks from these albums, as well as early/alternate versions of many songs, which includes two previously unknown tracks.Track 11 and 12 are alternate versions of the two bonus tracks from the 1990 CD release of The Marble Index.Track 13 to 19 are early versions of the songs.Track 14 contains a hidden 15th track.Track 9 and 10 are two previously unreleased songs.Track 9 to 14 are early versions of the songs.Tracks 1 to 8 are remastered versions of the songs from Desertshore.Tracks 1 to 8 are remastered versions of the songs from The Marble Index