Endless worry? Lifted it with classical pieces (8)

I believe the answer is:

concerti

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'endless worry? lifted it with classical pieces' is the definition.
I can't tell whether this definition defines the answer.

'endless worry? lifted' is the wordplay.
'endless' means to remove the last letter.
'worry?' becomes 'concern' ('concern' can be a synonym of 'worry').
'lifted' becomes 'ti' (I am not sure about this - if you are sure you should believe this answer much more).
'concern' with its final letter taken away is 'concer'.
'concer'+'ti'='CONCERTI'

Can you help me to learn more?

(Other definitions for concerti that I've seen before include "Musical compositions for soloist and orchestra" , "Instrumental compositions with solo parts" , "Works for soloist/orchestra" , "Musical works featuring soloists" , "Compositions for orchestra and soloist(s)" .)

I've seen this clue in The Independent.

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