Section in repetitive music engaging hearts (7)
I believe the answer is:
tranche
'section' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
'repetitive music engaging hearts' is the wordplay.
'repetitive music' becomes 'trance' (I can't justify this - if you can you should give a lot more credence to this answer).
'engaging' indicates putting letters inside.
'hearts' becomes 'h' (abbreviation used in card games e.g. bridge).
'trance' placed around 'h' is 'TRANCHE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for tranche that I've seen before include "Instalment of e.g. loan" , "Portion, slice" , "Measure" , "portion of shares" , "instalment of shares" .)