Disney Hall is an unconventional concert hall. So the organ designed for the hall should be unconventional too. Its builders “had to adjust the size, sound and volume of each of its 6,134 pipes to suit the acoustics of the four-tiered, 2,265-seat hall. They had to engineer a way to make huge display pipes in bizarre shapes, anchor them securely into the rest of the structure, and yet allow them to sound normally. And since earthquake faults run beneath downtown Los Angeles, they had to make the organ quakeproof.”