But now it seems that the boys may have given away part of the setlist in a Snapchat posted to their official account.
Some eagle-eyed members of the 5SOSFam spotted this piece of paper with what looks like a setlist jotted down in one of the boys’ latest snaps.
Although we can’t tell too much from the sheet, at least we know ‘Airplanes’, ‘Outer Space’ and, what looks like ‘Vapour’ will all be performed.
Get learning your lines, gallies.
What songs are you hoping to hear the lads performing on SLFL? Let us know on Twitter at @maximumpop.