She has just two notes in Bohemian opera (4)
I believe the answer is:
mimi
'she' is the definition.
'just two notes in bohemian opera' is the wordplay.
I cannot really see how this works, but
'notes' could be 'mi' and 'mi' is located in the answer.
The remaining letters 'mi' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'has' acts as a link.
Can you help me to learn more?
(Other definitions for mimi that I've seen before include "I'm, I'm mad about the heroine in 'La Boheme'" , "unfortunate sewer" , "Puccini's seamstress" , "showgirl" , "Tragic heroine" .)