Possible Clues:

• Do-to-do interval, musically
• Player's range
• La-la, e.g.
• It goes from C to C, in music
• Musical interval at 8 roughly
• Notes the greeting to the month, in short
• Do-to-do interval
• Span from C to C e.g.,
• Notes that this is a greeting to autumn, perhaps
• At cove (anag.)