MUSIC

L.A. Philharmonic to Play Salzburg Festival: In August, 1992, the Los Angeles Philharmonic will become the first American orchestra to be in residence at the Salzburg Festival. The announcement is expected to be made today at a press conference in Austria. Under its music director-designate, Esa-Pekka Salonen, the L.A. Philharmonic will play in four performances of the Messiaen opera, “St. Francois d’Assise.” The orchestra will also play a number of concerts at the festival. According to a spokeswoman for Ernest Fleischmann, managing director of the orchestra, Hollywood Bowl will host a festival of visiting orchestras during the “close to a month” the Philharmonic will be in residence in Salzburg--one of the most prestigious summer music festivals in Europe. On Sunday, the spokeswoman said Fleischmann is “in negotiations with major American and international orchestras” to appear in the Cahuenga Pass showplace in the Philharmonic’s absence.