We thought the dissonance graph was so cool we made it into a tshirt: https://store.dftba.com/products/minute-physics-harmony-dissonance-tee

finally a video from my favorite YouTuber: half-hourphysics

Finally a video which explains dissonance in music without stopping at "because Greek philosophers liked small ratios"!

This is unreal. I have been told countless times that "we don't know why but we think humans just like hearing tones with simple ratios". This explanation makes so much more sense and offers such a more nuanced and interesting view of harmony. I want to immediately start playing with additive synthesis to find some interesting new chords.

I admire that you don't "dum down" your content. This is top notch educational material for those who pursue knowledge and understanding. Thank you

As a musician this video was incredibly interesting. Very cool to hear an interval that I knew was an octave, but still sounded dissonant

as a science obsessed music student THANK YOU THEY ABSOLUTELY SHOULD TEACH THIS IN COLLEGE

As a professional engineer in acoustics and signal processing, this is one of my new favourite videos of all time. It manages to perfectly explain and demonstrate one of the most complex aspects of music with minimal effort for the viewer. Truly wonderful and masterful.

"I had 5 minutes, I'll watch a minutephysics video!" - Last words.

Wow... Just wow! Such good video and audio production and editing. Congrats! One my top fav 10 YT ever

Audio system engineer here. I've spent the past several weeks preparing lessons and lab plans to teach this stuff as fundamental context for mixing. This might be one of the best videos I've ever seen of these concepts. Brilliant work. Thank you!

As a music theorist who is definitely not a physicist, I find this to be probably one of the most understandable videos of yours in this complexity range

This video is so fascinating cuz if you fiddle with additive synthesis enough you get the intuition for this kinda stuff but you put it into words and visuals so clearly. Incredibly well made video

THX's Deep note makes so much more sense now. They started with dissonance and then expanded the notes to every harmonic to get that satisfying resolution. Perfection

0:30 I'm unreasonablely mad that you didn't resolve the suspended chords... My head hurts

Music educator and microtonalist here. 1/3 of the way through, and very good so far. Two terms I wanted to "sub out" or clarify, to avoid confusion: Discordance and concordance = the sensory acoustic roughness/fusedness of sounds outside of context, rather than dissonance and consonance, which almost always involve "resolution" of what came before, relevance to the scale, or relationship to the tonic, etc. And partial = frequency component of a complex sound, rather than overtone. In general music knowledge, overtones are generally understood as harmonics above the fundamental, whereas the word "partial" is used on some commonplace inharmonic spectra, including bells, and piano, where the lowest partial is the lowest frequency component with a strong peak. In bells it is generally an octave below the second partial, and a minor tenth below the third. In piano tuning, the beating of coincident partials is usually the primary thing to listen for to get a note "in tune". If you use "partial" numbers instead of "overtone" numbers, the maths and labelling are both simplified, essentially the same. You can say a 4:7 (or 7:4 if you like) ratio is the distance between the 4th and 7th partial, and where the 7th partial of the lower note is equal to the 4th partial of the upper note. There will be a (first order) difference tone equal to the 7-4=3rd partial, and a (first order) summation tone equal to the 7+4=11th partial.

Everyone is complaining about the length. But that Video was so packed with information that you more than kept up the pace. I'd love to see more videos like that

Crazy that Marc Evanstein, Minutephysics, and myself all made in depth videos on basically the same esoteric topic all within the same week of each other. Im sure it takes all of us months to produce these videos as well which is even crazier. Exact same sources too. Bill Sethares is clearly in the air! Glad his work is getting the recognition it deserves.

As someone who has no idea about music theory or playing an instrument, I feel like I need an entire multipart lecture to understand this video fully.

As a musician, I feel like I'm not supposed to learn this. Knowledge like this only tortures me in this artistic process.