Found out it's, most unusually, a duet (8)
I believe the answer is:
situated
'found' is the definition.
(situating is a kind of finding)
'it's most unusually a duet' is the wordplay.
'it's most' becomes 'sit' (I can't justify this - if you can you should give a lot more credence to this answer).
'unusually' indicates anagramming the letters.
'a'+'duet'='aduet'
'aduet' is an anagram of 'uated'.
'sit'+'uated'='SITUATED'
'out' is the link.
Can you help me to learn more?
(Other definitions for situated that I've seen before include "Placed or located in certain position" , "Located; put into position" , "Positioned" .)