Special knowledge of solo recording (4)

I believe the answer is:

lore

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'special knowledge' is the definition.
'lore' can be an answer for 'knowledge' (lore is a kind of knowledge). I am not sure about the 'special' bit.

'of solo recording' is the wordplay.
'of' indicates a hidden word.
'LORE' can be found hidden inside 'solo recording'.

Can you help me to learn more?

(Other definitions for lore that I've seen before include "Folk knowledge" , "Role for learning" , "Ancient learning" , "Wisdom" , "Mythology" .)

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