None of these worlds was incompatible. All of these people were around, and if you were at all interested in painting, poetry, or dance, you met them.

All of these people kept on being professional musicians and composers in the strictest sense.

People would use each other in their works. The barriers were breaking down; everyone brought in special qualities.

I've come up with another formulation about style: that it's essentially a manifestation of a certain habitual set of limitations. It's what a composer does NOT do that defines a style.