Will work out of the box if you have the correct MIDI cable and after selecting correct mode (drum or guitar).

My neighbor has a nice Roland drum kit with mesh heads, and he let me bring over my PS4 and try it out.

Pro drumming in Rock Band 3 has never been this much fun

When doing a "solo" or custom fill when the game wants you too, the drums are behind like always.

how well the drums did work with the game