The orchestra toured Europe under Yoel Levi in 1991; and with its Chorus, under Robert Shaw, in 1988. In 2006 the orchestra and its chamber chorus, under Robert Spano, served as the resident ensemble for California's Ojai Festival. The full ASO Chorus has thrice visited Berlin, giving three performances on each occasion of Benjamin Britten's War Requiem (2003), Hector Berlioz's Grande Messe des Morts (2008), and Johannes Brahms's Ein Deutsches Requiem (2009) with the Berlin Philharmonic Orchestra under ASO Principal Guest Conductor Donald Runnicles.