Old Satie composition is untypical (8)

I believe the answer is:

isolated

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'untypical' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'old satie composition' is the wordplay.
'composition' indicates an anagram (letters arranged or composed in a different order).
'old'+'satie'='oldsatie'
'oldsatie' is an anagram of 'ISOLATED'.

'is' acts as a link.

Can you help me to learn more?

(Other definitions for isolated that I've seen before include "hard to find" , "Solitary" , "Idols ate (anag.)" , "Separated from others" , "'Detached, kept apart (8)'" .)

I've seen this clue in The Guardian.

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