I can see three different types of composers in musical history each of whom creates music in a somewhat different fashion .each 是代词，意思每一种，代表单数，所以为谓语用第三人称单数；whom 作OF 宾语。

Music simply wells out of him,well 是涌出，喷出来。

in a sense 在一定意义上

not so much ....as  与其说。。。不如说。。。

it isn't easy to be 不定式作主语

at a stretch不休息， 

rather than  是。。。而不是。。。

It goes without saying that 不用说，理所当然，不言而喻。