Flat or sharp (3,3)
I believe this is a double definition.
'flat' is the first definition.
(thesaurus)
'sharp?' is the second definition.
(thesaurus)
(Other definitions for note that I've seen before include "Characteristic" , "Observe - musical symbol" , "Single tone; short letter" , "Short personal letter" , "Short communication" .)
This clue is a double definition.
'flat' is the first definition.
(thesaurus)
'sharp' is the second definition.
(thesaurus)
(Other definitions for off key that I've seen before include "Musically, not quite on the right note" , "Musically, out of tune" , "Dropped; hill" , "Inappropriate" , "Inaccurate in pitch" .)