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It makes hard rock lead, for example (5,5)

Ross

I believe the answer is:

heavy metal

I'm a little stuck... Click here to teach me more about this clue!

'lead for example' is the definition.
(lead is a heavy metal)

'it makes hard rock' is the wordplay.
I cannot really see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
'hard' could be 'heavy' (synonyms) and 'heavy' is found within the answer.
The remaining letters 'meal' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for heavy metal that I've seen before include "Typically, lead" , "Iron" , "Loud form of rock" , "Type of rock" , "guitar is thrashed in it" .)

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