Music has been the underlying priority of the Auditorium’s architectural and urban project.

All the available areas, both internal and external, have been planned according to their being functional to musical activity. More specifically, the Auditorium has not only three concert halls, but also a Theatre Studio, and Studios 1, 2, 3, a foyer and a cavea.

Each of the three halls is different  in size and has been constructed with the aim of satisfying the needs of any music genre. The Santa Cecilia Hall can be used for large orchestral and choral symphonic concerts. The Sinopoli Hall, because of its greater acoustic flexibility, is more apt for a great variety of musical genres. This is also because orchestra position can be modified with respect to the audience; the Petrassi Hall  , finally, has been assigned to contemporary musical genres, theatre performances and cinema. This is because it has an inbuilt system that allows both the musical source and the audience to be shifted and the sound reverberation tuned. Theatre Studio, with his 350 places, is a multi-functional space.
Studios 1, 2, 3 are also important musical locations. Thanks to the quality of their technical facilities and equipment, they guarantee all practice sessions optimal acoustic conditions.
Even the foyer can be used, on particular occasions, to present simple musical performances.

Finally, the Cavea, the open-air amphitheatre at the centre of the Auditorium, is another particularly interesting musical area welcoming up to 3.000 spectators.
Apart from these areas dedicated exclusively to music, the new Auditorium also has spaces that can be used for conferences, debates, meetings with composers and musicians, research (there is a library and a listening room) and didactic purposes (vocal, musical and multimedia research workshops). Finally, there is also a bookshop, a bar and a restaurant to take pleasant rests.