Simplify the following text for a Grade 10 native English-speaking person.
Original: A symphonic poem or tone poem is a piece of orchestral music in a single continuous section ( a movement ) in which the content of a poem , a story or novel , a painting , a landscape or another ( non-musical ) source is illustrated or evoked .
Simplified: A symphonic poem or tone poem is a piece of orchestral music which has a story attached to it or describes something such as poem or a painting or any idea which is not music .