Shouldn't it be : "It is about time you all got on the same page" ?
Ça me semble être une adaptation des suggestions du Harrap's:On the other hand, the similar-sounding make sure we sing the same tune might be inappropriate: I associate that one with a criminal gang getting the cover story ready before interrogation.
Familier accordez vos violons
make sure you tell the same story,
make sure you get your stories straight
Copyright © 2000, Harrap's Multimedia, © 2000, Havas Interactive