Originally Posted by MarioD
Because somebody called two notes played simultaneously a chord but based on music theory that has been taught for years it takes three or more notes to form a chord.
Mario, David and rharv, with all due respect I must cast my lot with Adam Neely, Wikipedia and Dr Dan unless proven otherwise because it comes down to knowledge and trust. These 3 sources conclude that a chord is made up of 2 or more pitches.

Adam Neeley chooses his words very carefully, is well-studied, is highly credentialed (Berklee College of Music and the Manhattan School of Music) and has lots to lose if he puts out bogus info. The guy is a music geek, and we need geeks! I’m unaware of anyone else on the internet in his lofty category. Do you?

Wikipedia also has strong credentials, is fact-checked by experts worldwide, is thoughtfully edited and is trusted by millions around the world.

Dr Dan is a smart guy too, I’ve never seen him give wrong info, and he chooses his words carefully. Although I don’t know his music credentials per-se, clearly he is well-studied in the subject.

What these 3 sources recognize is that any music theory truth goes beyond and transcends what one was taught by a childhood music teacher, or what one was taught in high school, or what one’s personal opinions may or may not be or even less-than-accurate websites that are casually uploaded. Music theory is a well thought out and established set of principles that over time “get written in stone”. I think I can say this even though I’m a beginner student of the subject myself.

Like I say, if someone can convincingly show credible evidence that a 2-pitch dyad can never be a chord, I’m all ears. Power chords (1-5) immediately come to mind.

Keep in mind, I’m not saying that said chord must be pleasing to the ear, unambiguous, make geometric sense on a guitar fretboard or any other artificial restriction.

If anyone disagrees, here is something to ponder. What “rule” in music theory prevents 2 pitches from being labeled a chord?

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For me there’s no better place in the band than to have one leg in the harmony world and the other in the percussive. Thank you Paul Tutmarc and Leo Fender.