Correctly sung
Else clues• Accurately, in music
• Best way to sing
• Correct, pitch-wise
• Easy to listen to, perhaps
• Good way to sing
• Great way to sing
• Harmonious, as singing
• Hitting the right note
• How to sing, ideally
• In tune
• Like a good singer
• Like good singers
• Musically accurate
• Musically correct
• Musically precise
• Neither flat nor sharp
• Neither sharp nor flat
• Not flat
• Not flat or sharp
• Not flat, say
• Not sharp at all
• Not sharp or flat
• Not sharp, say
• Not sour
• Perfectly pitched
• Pitch perfect
• Pitched perfectly
• Pitched properly
• Pitched right
• Pitched well?
• Pleasing to the ear
• Properly pitched
• Singing accurately
• Singing well
• Sounding right
• Sounding right, in a way
• Suitable for the chorus
• Sung correctly
• True, as a tuba
• Well pitched