Kalata
Out of the Silent Planet
It's possible (the poster is reversed, the time machine is needed for Senjutsu again wow), but I think they would prefer the better/more lively live song and this is Time Machine, although Senjutsu is a big song for the album. Curious how the song will work in the middle of the set.They could swap out Time Machine for Senjutsu, it's only 1 minute difference but taking away the intro it's about the same as far as playing time goes
Time Machine is important for the theme, Days Of Future Past is the name of the tour - both songs have the same noticeable backdrop. Celts too, and I doubt they will change a live favorite like Writing On The Wall (the other new song that was played live for years in a row was The Wicker Man).
It's between Celts, Time Machine and even Days, but it's really difficult to say.