Wonderful trio by Chopin, initially (5)

I believe the answer is:

magic

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'wonderful' is the definition.
(I've seen this before)

'trio by chopin initially' is the wordplay.
'trio by' becomes 'magi' (I can't justify this - if you can you should believe this answer much more).
'initially' suggests taking the first letters.
The first letter of 'chopin' is 'c'.
'magi'+'c'='MAGIC'

Can you help me to learn more?

(Other definitions for magic that I've seen before include "Witchcraft" , "Necromancy" , "Enchantment" , "Art that supposedly invokes supernatural powers" , "Mysterious quality" .)

I've seen this clue in the Evening Standard.

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