Related Clues:

• Not sour
• In perfect pitch
• Ignored, with ''out''
• In pitch
• Accurately, in music
• Adjusted the pitch of, as a piano
• Adjusted a baby grand
• Like a purring Jaguar
• Sung correctly
• Musically correct
• Ignored, with 'out'
• Au courant, with "in"
• Like a good singer
• Sharpened, say?
• Made less sharp