How is a symphony different from a concerto?
A concerto is based on the assumption that there are two different groups of instruments which are playing against each other, either a solo instrument or a solo group of instruments against the orchestra while the symphony is a masterpiece for an entire orchestra to work as a team. The form for a concerto finds its roots in the Italian opera overture which is built on three sections: fast-slow-fast. The sections developed to become movements. The symphony is based on the sonata-cycle which is a four movement form.
