The concert hall was designed as a single volume, with orchestra and audience occupying the same space. Seats are located on each side of the stage, providing some audience members with distant views of the performers’ sheet music. The former director of the Los Angeles Philharmonic felt boxes and balconies implied social hierarchies within the audience, and spatial segregation was minimized in the design. Curvilinear planes of Douglas fir provide the only partitions, delineating portions of the 2,265 member audience without creating visual obstructions. The steel roof structure spans the entire space, eliminating the need for interior columns. The organ stands at the front of the hall, a bouquet of 6,134 curved pipes extending nearly to the ceiling. It is the unique result of a collaboration between Gehry and Manuel J. Rosales, a Los Angeles-based organ designer