Take the lead from poor grocer's hat band (9)

I believe the answer is:
orchestra
'band' is the definition.
(musical band)
'take the lead from poor grocer's hat' is the wordplay.
I cannot really understand how this works, but
'take' could be 'r' (abbreviation for 'recipe', Latin for 'take') and 'r' is found within the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
'from' could be 'o' (I've seen this in other clues) and 'o' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for orchestra that I've seen before include "Large music group" , "Brass, woodwind, strings and percussion" , "those who provide the music" , "Company of musicians" , "Carthorse (anag)" .)
