Crossword Genius

Blues Dylan composed depicting activity of dealer (3,3,4)

Ross

I believe the answer is:

buy and sell

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'activity of dealer' is the definition.
I know nothing about this answer so I can't tell whether this works.

'blues dylan composed' is the wordplay.
'composed' is an anagram indicator.
'blues'+'dylan'='bluesdylan'
'bluesdylan' is an anagram of 'BUY AND SELL'.

'depicting' is the link.

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I've seen this clue in The Guardian.
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