be in unison

See: agree, comply
References in classic literature ?
As its name imports (smeer, fat; berg, to put up), this village was founded in order to afford a place for the blubber of the dutch whale fleet to be tried out, without being taken home to Holland for that purpose.
It was his first introduction to the dread summer berg of the Banks, and he cowered in the bottom of the boat while Manuel laughed.
A berg that seemed ready to carry the world before it would ground helplessly in deep water, reel over, and wallow in a lather of foam and mud and flying frozen spray, while a much smaller and lower one would rip and ride into the flat floe, flinging tons of ice on either side, and cutting a track half a mile long before it was stopped.
Is your master really going to Suliman's Berg, Jim, or are you lying?
Go and flirt with Berg as much as you please," she finished quickly.
We thought he was crazy; but he wasn't, for that afternoon we sighted a great berg south of us, and we'd been running north, we thought, for days.
In his mind's eye he saw its streets a thousand leagues long, aye, and longer; turnings that doubled earth's stormiest headlands or were the way to quiet inland ponds; cross-roads, taken one way, that led to flower-lands and summer seas, and that led the other way to bitter, ceaseless gales and the perilous bergs of the great west wind drift.
The black outline of a boat just shows itself, hauled up on the berg.
Then Schom berg expounded in my hearing to three or four people his theory that Falk was after Captain Her mann's niece, and asserted confidently that nothing would come of it.
But, I say, I've been told Berg is going up in a great balloon next Sunday from the Yusupov Garden and will take up passengers at a fee.