Notes air is transposed as "Lady of Spain" (8)
I believe the answer is:
senorita
'lady of spain' is the definition.
'senorita' can be an answer for 'lady' (I have seen 'Young lady' mean 'senorita' so perhaps 'lady' could also mean 'senorita'). I'm unsure of the 'of spain' bit.
'notes air is transposed' is the wordplay.
'is transposed' is an anagram indicator.
'notes'+'air'='notesair'
'notesair' is an anagram of 'SENORITA'.
'as' is the link.
Can you help me to learn more?
(Other definitions for senorita that I've seen before include "Young Spanish lady" , "Young Spanish woman for notaries" , "Spanish miss" , "Treason I commit for young Spanish woman" , "Abroad, miss" .)