[1] The HSO is dedicated to performing classic, contemporary and world premiere media scores, and comprises recording musicians from the Hollywood movie studios and the Los Angeles concert scene.
Concerts often include a large massed choir from the Los Angeles area, bringing the population on stage to as many as 140 instrumentalists and singers.
[7] Composers represented in the debut concerts included Miklós Rózsa, Erich Wolfgang Korngold, John Williams, Jerry Goldsmith, Maurice Jarre, Victor Young, Dimitri Tiomkin, Craig Armstrong, Clint Eastwood, Henry Mancini, Elmer Bernstein, Dave Grusin, Alex North, John Scott, Sergei Prokofiev, Ralph Vaughan Williams, Max Steiner, Don Davis, Ernest Gold and Bernard Herrmann.
Southern California's classical radio station, K-Mozart 105.1FM, broadcast a one-hour program containing portions of the inaugural concert by the Hollywood Symphony Orchestra, under the baton of conductor John Scott.
[10] The Honorary Advisors to the HSO are practically a "who's who" of the film, television and music industries, with Academy Award, Golden Globe Award, Emmy Award and Grammy Award winners and nominees, including Alan Bergman, Marilyn Bergman, Marilee Bradford, Bruce Broughton, John Cacavas, Daniel Carlin, Budd Carr, Alf Clausen, Don Davis, John Debney, Allyn Ferguson, Dan Foliart, Charles Fox, Sid Ganis, Billy Goldenberg, Dave Grusin, Ted Kotcheff, Gary Le Mel, Michel Legrand, John Morgan, Randy Newman, Lennie Niehaus, Basil Poledouris (d), Sydney Pollack, Nick Redman, Edye & Pete Rugolo, Lalo Schifrin, Richard Sherman, William Stromberg, Patrick Williams, Christopher Young, Frank Yablans, and Hans Zimmer.