I have never connected my Roland Digital Piano RD300s, which has MIDI In, Out and Thru connection only, to a computer due to the weight of the RD300. I used my Yamaha YPG Digital Piano, which has a USB connection to my laptop adding Band in the Box for accompaniment for my gigs, but now I wish to use the RD300 in my home for recording.

Currently I have the RD300s connected as directed:

UM1 MIDI OUT plugged into RD300 MIDI IN) and
UM1 MIDI IN plugged into RD300 MIDI OUT)
UM1 USB plugged into my Computer

After making the UM1 connection to my Roland RD300, I now have piano sound coming through my Peavy amplifier.

I have Band in a Box selected as Piano (Thru) and when I play keys on the Roland 300, they appear playing the notes
on my BIAB computer screen. (Which is indication the connection is made properly)

My Problem Unresolved:

When I select a BIAB accompaniment style, I only get a Piano sound for all the instruments. Selected instruments or drums do not sound out of the Peavy Amplifier. The instruments do sound out of the Microsoft GS Waveable Synth. Real Drums are unselected. All the BIAB Instruments, including Drums, are showing Yellow.

I am attaching the Roland RD300s, an older version MIDI Manual (9 pages) to assist in problem resolving.


Your assistance is greatly appreciated.