Instrument with reeds coiled tight mother holds (8)

'instrument' is the definition.
(I've seen this before)

'coiled tight mother holds' is the wordplay.
'tight' is an anagram indicator (tight can mean drunk).
'mother' becomes 'ma' (Ma is another word for mother or mum).
'holds' means one lot of letters goes inside another.
'coiled' with letters rearranged gives 'elodic'.
'elodic' going within 'ma' is 'MELODICA'.

'with reeds' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?