Tonight at 7:00 on the “Evening Concert” on FM 90.9 it’s the San Francisco Symphony. Music Director Designate Esa-Pekka Salonen leads the group in Strauss’ “Thus Spoke Zarathustra” and Sibelius’ “Four Legends from the Kalevala”. Also on the program Thorvaldsdottir’s “Metacosmos”.

Also on the program, two works by Richard Strauss.

Tonight's program has Simone Young leading the LA Philharmonic in concert.

Program music is defined as music that (usually) has a title given by the composer, written to conjure , for example, an event "Short Ride in a Fast Machine" or place "El Salon meixco", to tell a story, like "Also Sprach Zarathustra" or some other "extra-musical" purpose.