HI
Yamaha do send the normal midi drums on ch 10 on my Clavinova.
And works with the standard midi template, All PARTS
However they can also send or receive drums on any ch if you send MSB 127

Many Yamaha styles use ch 9 as a second percussion ch .
This wont give you a problem unless you make a midi recording File using the keyboards on board styles. Then it might, if the receiving Synth is say a sound font and does not use MSB as it doesn’t understand MSB127 LSB 0 it will fall through to
LSB 0 if your are using the standard kit which is patch 0, it will therefore sound a piano that is LSB 0 Patch 0.in gen midi terms.
If using say the Electro kit patch, that is Yamaha patch no 25 midi patch 24 you will get a nylon guitar.

Working your way sending BIAB data to the Clavinova should not normally be a problem always providing you are sending your drums on the midi default setting of Ch10 as set in the BIAB mixer and therefore in the channels screen shown above.

Good luck
Mike

Last edited by Mike Head; 11/15/17 05:46 AM.
BIAB2021 UltraPlus,AsusN55S1Tbssd, W10/64,Akai EIEpro
Yamaha CVP405,SquireStrat, CoolsoftVMidSynth
Novatation Impulse61 Ctr kbd, Cwalk blab Kontakt

http://mikesmusic.byethost16.com/