韦氏高级词典对composition的释义：

1 [noncount] : the way in which something is put together or arranged 构成

• the painting's unique composition

: the combination of parts or elements that make up something

• Each rock has a slightly different composition. [=makeup]

• the changing composition of the country's population

• the composition of a chemical compound

2 [count] : a piece of writing 作品

• Is this poem an original composition? [=did you write this poem yourself?]

especially : a brief essay written as a school assignment

• The teacher reminded us to hand in our compositions at the end of class.

3 [count] : a written piece of music and especially one that is very long or complex 曲目

• a famous classical composition

4 [noncount] : the art or process of writing words or music 作曲或写作技巧或过程。

      She studies musical theory and composition.

由此可知，composition是不能和source搭配的。创作需要灵感，灵感来自某个来源。不能说创作来自于某个来源。