Sonata Form In The Romantic As Early As The Mid-development Changes And Related Thinking

Sonata Form originated from Traditional Tonal Music。It arose in late Baroque Period and gradually decline in 20th century. The paper is to analyze the period of early and middle Romantic Period focusing on theme variations of Exposition,Tonal development of Development Group, changes of length of ending part and controversial phenomena in those researches, comparing with the approach of Classical Period, trying to find out the characteristics of Sonata Form in the period.