1. Different interpretations
Symphonic poetry is a kind of single-movement title symphony music, which was born out of the concert overtures in the 19th century (1850) and emphasized the expression of poetry and philosophy.
A symphony (not the same as a symphony, a symphony and a symphony are different but can be used interchangeably) is a large-scale orchestral piece containing multiple movements, usually composed for an orchestra. A symphony is a large orchestral suite that evolved from Italian opera overtures.
2. Different themes and forms
The genre of each movement of the symphony is very similar to that of the sonata, except that the scale is larger, the musical theme is greatly developed, and the orchestration method is richer, suitable for expression. Highly dramatic content.
The form of symphonic poetry is eclectic and is often freely developed according to the principles of sonata form. It is a large-scale orchestral piece based on ideas from literature, painting, historical stories and folklore.
3. Different characteristics
The music of symphony has profound connotation and is dramatic, epic, tragic, and heroic, or the music is solemn in style, narrative, descriptive, and lyrical. , customs, etc.
Symphonic poetry is one of Liszt's main genres. Usually the form of a single movement is adopted, and the structure is relatively free. Sound poems, sound paintings, symphonic fairy tales, etc. are also musical genres similar to symphonic poetry.
Baidu Encyclopedia - Symphonic Poetry
Baidu Encyclopedia - Symphony