Original lyric, a concert's opening material (7)

Ross

I believe the answer is:

acrylic

'material' is the definition.
(acrylic is a kind of material)

'original lyric a concert's opening' is the wordplay.
'original' is an anagram indicator.
'opening' suggests taking the first letters.
The initial letter of 'concerts' is 'c'.
'lyric'+'a'='lyrica'
'lyrica' is an anagram of 'acryli'.
'acryli'+'c'='ACRYLIC'

(Other definitions for acrylic that I've seen before include "Pungent acid" , "Synthetic resin or fibre used for textiles" , "Textile fibre - icy Carl (anag)" , "Type of paint or textile fibre" , "fibre that's synthetic" .)

I've seen this clue in The Times.

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