Article on control needed to hold minute instrument (8)

'instrument' is the definition.
I know nothing about this answer so I can't judge whether this works.

'article on control needed to hold minute' is the wordplay.
'article' becomes 'the' (the definite article in English).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'control' becomes 'rein' (rein is a kind of control).
'needed to hold' is an insertion indicator (to hold can mean to receive or contain).
'minute' becomes 'm' (abbreviation).
'rein' going around 'm' is 'remin'.
'the'+'remin'='THEREMIN'

Can you help me to learn more?