When you play the song you are hearing the RealDrums even though notation says it is GM 41 Brush Kit. When you save the song as MIDI you will get the Brush Kit, as expected. Try changing the GM brush kit to a GM standard drum kit as that may correct the problem.

FYI - I have run into this before when trying to use the MIDI version of a RealDrum kit. Some are spot on and some are not. In fact I have given up using the MIDI versions of RDs and only use either MIDI style drums or using other non-PGM MIDI drup loops like GrooveMonkee.

I hope this helps.

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