<Adjective> Songs Say So Much
The Recording Studio of the Mansion is in the basement. In order to reach it, you must take a musical instrument. Play a few notes in your room and at each corner where you must change direction on your way to the basement. At the bottom of the last flight of stairs, you will see a door with decals of instrument-makers both real and imaginary. Enter it.
The room which you enter has a microphone, speakers, and other audio recording recording equipment. Speaking or singing into the microphone will inspire sadness in any listener, no matter what is spoken or sung. Further inward are doors to other rooms set up similarly, except that they inspire different emotions (happiness, anger, hatred, wistfulness, love, fear, et cetera).