Crossword Genius

Rock singer on a course of self-discovery? (9)

Ross

I believe the answer is:

reasoning

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

'course of self-discovery?' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

'rock singer on a' is the wordplay.
'rock' indicates anagramming the letters (the solver must 'rock' the letters around).
'singer'+'on'+'a'='singerona'
'singerona' anagrammed gives 'REASONING'.

Can you help me to learn more?

(Other definitions for reasoning that I've seen before include "Logic" , "argument" , "Logical thought process" , "sense?" , "Thinking that is coherent and logical" .)

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