Book edited by an old guy who usually writes his own stuff (3,5)

I believe the answer is:

bob dylan

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'guy who usually writes his own stuff' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'book edited by an old' is the wordplay.
'book' becomes 'b' (abbreviation for book).
'edited' indicates anagramming the letters.
'by'+'an'+'old'='byanold'
'byanold' is an anagram of 'obdylan'.
'b'+'obdylan'='BOB DYLAN'

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(Other definitions for bob dylan that I've seen before include "US protest singer/songwriter" , "Singer-songwriter, born Robert Allen Zimmerman in 1941" , "US singer/songwriter is nobly bad, curiously" , "Songwriter, winner of the 2016 Nobel Prize for Literature" , "Singer" .)

I've seen this clue in The Independent.

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