Related Clues:

• Note; character
• Sound's character
• Memo; tone
• Absence of drink not given a mention
• Memo; pay attention to
• Pay attention to; record
• It could be me keeping books in Northumberland
• A, B, C, D, F or G
• Build muscles, with 'up'
• Thing passed at school
• Mood indicator
• You may get one from a doctor
• Piece of correspondence
• Step on a scale
• Musical pitch