Claim: The Petronas Philharmonic Hall, Malaysia's first concert hall built specifically for classical music which was constructed with concealed movable ceiling panels, has seven movable panels in the upper ceiling which can be adjusted to alter the volume in the hall and simulate a wide range of acoustic environments.
Evidence: The Petronas Philharmonic Hall (Malay: Dewan Filharmonik Petronas) is Malaysia's first concert hall built specifically for classical music. The hall is constructed with concealed movable ceiling panels which can be adjusted to alter the volume in the hall and simulate a wide range of acoustic environments. There are seven movable panels in the upper ceiling.