I have written a drum map for EZDrummer - see: Importing Superior Drummer 3 MIDI Into Dorico? - #21 by jose7822 - Dorico - Steinberg Forums . In general if you are creating a drum map for an instrument that is ‘almost GM’ then use the existing GM drum map as a starting point and add/remove things you don’t need. If you assign the EZDrummer drum map to your instrument then you can drag and drop parts from the EZDrummer plugin window.