make beautiful music together

band together

to unite, to come together

bang some heads together

Attempt to get results from a previously ineffectual or argumentative group, typically by coercion or force.

beautiful people

Fashionable, privileged, glamorous people, especially those belonging to international high society; the beau monde.

birds of a feather flock together

People of similar character, background or taste tend to congregate or associate with one another; it is easier to establish friendships with people that one has a lot in common with.

bring together

To cause people to do something together; to bring about togetherness.

cannot make it

Cannot reach satisfactory or expected standards or do something competently; describes someone in a hopeless situation.

doctors make the worst patients

It is difficult to advise people on subjects that they are experts on.

enough to make a cat laugh

Very outlandish or outrageous.