Note area with low points (6)
I believe the answer is:
minima
'low points' is the definition.
(plural of minimum)
'note area' is the wordplay.
'note' becomes 'minim' (type of musical note).
'area' becomes 'a' (maths abbreviation).
'minim'+'a'='MINIMA'
'with' acts as a link.
(Other definitions for minima that I've seen before include "Smallest possible amounts" , "unbeatable prices?" , "Lowest values" , "Least quantities" , "Lowest points" .)