Crossword Genius

What's played a lot and mostly unlike much music? (6)

Ross

I believe the answer is:

atonal

'unlike much music?' is the definition.
(most music is tonal rather than atonal)

'what's played a lot and mostly' is the wordplay.
'what's played' indicates anagramming the letters.
'mostly' means to remove the last letter.
'a'+'lot'+'and'='alotand'
'alotand' with its last letter removed is 'alotan'.
'alotan' anagrammed gives 'ATONAL'.

(Other definitions for atonal that I've seen before include "Lacking traditional musical tone structure" , "(Of music) lacking key" , "An alto (anag) - without a fixed key" , "Describes music not written in a particular key" , "Keyless" .)

I've seen this clue in The Telegraph.
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