The LACO has been a major contributor to the music scene in Los Angeles for 40 years. You've probably heard their musicians in many movies, music recordings, and seen them (the mural of an orchestra on the 110? The LACO). How about seeing them live? LAist has covered them several times before, and this year is a good year to check them out for yourself. The LACO is celebrating its 40th anniversary, and bringing......