Crossword Genius

Rock legends used boring cliches willy-nilly (4,6)

Ross

I believe the answer is:

cold chisel

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'rock legends' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'used boring cliches willy-nilly' is the wordplay.
'used' becomes 'old' (similar in meaning).
'boring' is an insertion indicator (to bore something can mean to drill into it).
'willy-nilly' is an anagram indicator (willy-nilly means randomly or without planning).
'cliches' is an anagram of 'cchisel'.
'old' put inside 'cchisel' is 'COLD-CHISEL'.

Can you help me to learn more?

(Another definition for cold chisel that I've seen is " Tool".)

I've seen this clue in the Sydney Morning Herald.
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