OK so I have Megadrum driving GarageBand via a USB connection which is great.
However, is it possible to use the 5-pin MIDI out port to drive a sound source via its MIDI in port e.g. my Roland XV2020 module or even my Casio PX5S?
I presume the USB midi overrides the 5-pin MIDI output. Would I replace the USB with a phone adapter as per the How do I power Megadrum link so that the MIDI signal goes out via the MIDI port?