I note that this morning BBC3 broadcast a piece by William Wordsworth.
After some research I found that this was the 20th Century composer
William Brocksley Wordsworth - not the early 19th Century poet.

Can you think of any artist who is both a composer and an author?

The only one I know is the late Anthony Burgess (John Anthony Burgess
Wilson) who wrote, among other works, "A Clockwork Orange" and "Earthly
Powers" and who composed several musical scores.

Regards ... Alex Soteros
Toronto