The term 'Form of Classical Music' can be summarized as the Sonata, which is a six-letter word. A Sonata is a piece of music composed for one or two instruments, typically in three or four movements. It is a form of classical music that originated in the Baroque period and has been used by composers throughout the centuries. Sonatas are often written for solo instruments such as the piano, violin, or cello, but can also be written for multiple instruments.