What does a ring of truth sound like? This phrase derived from the idea that a bell that rings true is a bell that rings at a correct note. A note is a pitch of sound. If that sound does not vibrate correctly, it is called “off pitch” or “off key,” meaning the note is either flat or sharp and therefore must be adjusted.
I used to play an acoustic guitar, and before I played any song I had to tune my guitar. There are many ways to tune a guitar, especially now with instrumental tuning apps. Before tuning a guitar or any other instrument can be accomplished, you must match each chord or key with the note you want your instrument to imitate.