symphonise

[Laresvog]

play or sound together, in harmony

[Lanell]

Symphonise is not officially recognized in standard English dictionaries, but its often used in a metaphorical sense. In general, it could mean to make things work together harmonically or synchronously, similar to various musical instruments in a symphony, creating a balanced and pleasing effect. It can refer to the coordination of various elements to produce a combined effect.