Many poems are fashionable (5)

I believe the answer is:

modes

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'are fashionable' is the definition.
I can't tell whether this defines the answer.

'many poems' is the wordplay.
'many' becomes 'm' (Roman numeral for a thousand).
'poems' becomes 'odes' (ode is a kind of poem).
'm'+'odes'='MODES'

Can you help me to learn more?

(Other definitions for modes that I've seen before include "Styles (in clothes, etc)" , "Fashions" , "Ways - manners" , "Styles of domes" .)

I've seen this clue in the Evening Standard.

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