On the ground floor is "The Prince Paribatra Music Room". The collection of Thai musical instruments belonging to the late H.R.H Prince Paribatra, son of His Majesty King Chulalongkorn [Rama V], are displayed here, such as 6 big drums, alto xylophones, Thai 3-stringed fiddles, and gongs. Most of them are very old, rare pieces of craftsmanship.