Callas confused by a place where she sang (2,5)
I believe the answer is:
la scala
'place where she sang' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'callas confused by a' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'callas' is 'lascal' which is within the answer.
'a' is present in the answer.
No letters remain.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for la scala that I've seen before include "Milanese opera house" , "place to sing" , "A Callas seen in famous Milan opera house" , "A Callas may find way to Milan's famous opera house" , "where Toscanini was musical director" .)