“On July 14, Marc Sazer, one of Los Angeles’s premier studio musicians (president of the Recording Musicians Association and violinist with the Pasadena Symphony) went to work for the first time since the coronavirus pandemic shut down live recording sessions,” writes Jim Farber in Tuesday’s (8/18) San Francisco Classical Voice. “The Reopening Protocol for Music, Television and Film Production: Appendix J went into effect on June 12.” The document prescribes rules concerning masks, social distancing, and other safety guidance for musicians. “A surprising side effect … was that … the rules … that applied to for-profit studio recording musicians could now be applied to nonprofit musical institutions … It is this designation that has allowed the Los Angeles Philharmonic to record two full orchestral programs (and their final rehearsals) on the vast stage of the Hollywood Bowl [to] be streamed (possibly as pay-per-view) at a date to be announced…. The Los Angeles Chamber Orchestra has been producing a series of free livestream ‘SummerFest’ concerts from the stage of the Colburn School’s Zipper Hall…. San Diego’s Mainly Mozart … series of bi-weekly, outdoor drive-in chamber music concerts … has proved so successful and popular that Mainly Mozart is currently planning a pair of multi-day live festival performances … in September and October.”