Naturally, listening to music in a room is going to be reflected by the acoustics..The question had to do with recording Bill's Tyros/3000...
Sure mixing is at it's best in a controlled enviroment.. Mix should also conform to the media it is intended...car radio, home stereo etc...I don't think $4000 monitors and a $10,000 prepared[sound ] studio is necessary for this media...

Why do Studios spend big bucks on the room...because they want to charge the customer big bucks to use the facility.