We've come to know the concerto as a work showcasing a single soloist with (or sometimes against) an orchestra, but what if a work has not 1... but 4 soloists at the same time? And what if it is also bringing in ideas from the symphony? John Banther and Evan Keely take a look at one of the defining works in the genre, show you what to listen for, and discuss why Haydn might have written it in the first place