Hi,
With the Pianos it is quite the same:
ROOM MIX: It is a mix of all room mics. Best to use in stereo to save voices. You can try also to pan it between
all speakers. But this stream is not used in the surround presets.
Condenser: a condenser stereo close mic. In surround panned to the front
Ribbon: a ribbon stereo close mic. In surround panned to the front
Tube: a tube stereo close mic. In surround panned to the front
Mid1: It is a mid layer stereo mic. Not too close with more ambience on it. Most of the time also panned to the
front but you can also play around with that stereo stream an panned it anywhere in the surround field.
Mid2: It is an alternative mid layer stereo mic. Not too close with more ambience on it. Most of the time also
panned to the front but you can also play around with that stereo stream an panned it anywhere in the
surround field
Main: It's the L+R from the main mic system. It's the same as Main L+R in the other libraries.
Main-C: It's the Center mic from the main mic system.
Surround: These are the left surround mic and the right surround mic from the main mic system.
High: These are 2 microphones above the main mic system. You can use it for the height layer when mixing in
Dolby Atmos or Auro 3D. You can also use it if you want to get more ambience sound.
High-Sur: These are 2 microphones above the main surround micrphones. You can use it for the rear height
layer when mixing in Dolby Atmos or Auro 3D. You can also use it if you want to get more ambience
sound.
Hope that helps to make things clearer. You should just play around with the mics an place them in the 5.1 field.
Best
Bernd