这张EP由四首十分完整的合作作品构成， 像是High Tone 2014年专辑 《Ekphr?n》的另一种可能，是在录制《Ekphr?n》时产生的新作品，就像影子一样。Ghost Track is like one of other possibilities which come from the previous album Ekphr?n released in 2014. It's a new work issues from the artistic subject created when High Tone had recorded this album.?Like the shadows, the name Ghost Track reveals 4 mature, worked and re-worked tracks modified according to different meetings.