What specific musical note, when tuned to 440 hertz (Hz), is universally recognized as the standard pitch reference (A440) for tuning most Western instruments?
💡 Explanation:
The standard international concert pitch, often referred to as A440, dictates that the note 'A' above middle 'C' (A4) should vibrate at 440 hertz. This serves as the primary reference point for tuning instruments in an ensemble.
