She wrote horrid music, discordant (4,7)

I believe the answer is:

iris murdoch

I'm a little stuck... Click here to teach me more about this clue!

'she wrote' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'horrid music discordant' is the wordplay.
'discordant' indicates an anagram.
'horrid'+'music'='horridmusic'
'horridmusic' anagrammed gives 'IRIS MURDOCH'.

Can you help me to learn more?

(Other definitions for iris murdoch that I've seen before include "writer" , ""The Sea, The Sea" author" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app