Daughter in play annoyed about parts for harmonium? (4,5)
I believe the answer is:
reed organ
'for harmonium?' is the definition.
('reed organ' can be a synonym of 'harmonium')
'daughter in play annoyed about parts' is the wordplay.
'daughter in play' becomes 'regan' (I've seen this before).
'annoyed' becomes 'rode' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' is a reversal indicator.
'parts' indicates putting letters inside (in the sense of cuts or separates).
'rode' reversed gives 'edor'.
'regan' enclosing 'edor' is 'REED-ORGAN'.
Can you help me to learn more?
(Other definitions for reed organ that I've seen before include "Melody Maker?" , "What you might hear" , "small instrument" , "musical instrument" , "Keyboard instrument, harmonium" .)