Founded by Mozart’s widow, Constanza, in 1841, the Mozarteum Orchestra of Salzburg celebrates its 175th Anniversary this November. “Splendid ensemble, virtuosic and polished instrumental skills, unforced balances and a disarming and relaxed stylishness” (Los Angeles Times) are hallmarks of this esteemed ensemble, which makes its PCMS and Kimmel Center debut with Radovan Vlatković, the “Croatian messenger of the gods of the valve horn,” (Hamburger Abendblatt) who is widely considered to be one of the world’s most exceptional horn players.