tuned
The Spanish word 'afinado' translates to 'tuned' in English. It is usually used in the context of music, referring to the process of adjusting the pitch of a musical instrument to the correct or desired musical key. The term can also be used metaphorically to express suitability or compatibility, such as in 'están muy afinados', translating to 'they are very tuned', which means they work well together or they are in sync.
The piano is tuned
This sentence is explaining that the piano has been adjusted so its notes are correct.
We need tuning for the guitar
This sentence is stating a need to adjust the guitar so its notes are correct.
His voice is not tuned
This sentence is saying that the person's voice is not producing the accurate pitch.