Particular notes to follow (6)
I believe the answer is:
detail
'particular' is the definition.
(I know that particular can be written as detail)
'notes to follow' is the wordplay.
'notes' becomes 'de' (two musical notes).
'to follow' becomes 'tail' (both can mean to chase or pursue).
'de'+'tail'='DETAIL'
(Other definitions for detail that I've seen before include "Respect" , "A small part of something" , "Small detachment of troops or police on special assignment" , "Special military group" , "Small item; assign" .)