He stated that the end of his seven-year relationship whilst writing the album was the reason for this and songs "Deathcar" and "Unfamiliar Ceilings" were directly about the breakup. The track "Floods" was in reference to global warming and "One Day Son" was written about war and the consequences it may have on future generations. "99" was given its name because when Simpson was trying to rename the demo of the track he dropped his laptop down the stairs and the only key that worked was the 9.