Note a US singer, one addressing students? (7)
I believe the answer is:
teacher
'one addressing students?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'note a us singer' is the wordplay.
'note' becomes 'te' (musical note).
'us singer' becomes 'cher' (US musician Cher).
'te'+'a'+'cher'='TEACHER'
Can you help me to learn more?
(Other definitions for teacher that I've seen before include "Tutor" , "One who educates" , "Cheater (anag.)" , "Master" , "Schoolmaster" .)