208 | Rick Beato on the Theory of Popular Music

There is no human endeavor that does not have a theory of it -- a set of ideas about what makes it work and how to do it well. Music is no exception, popular music included -- there are reasons why certain keys, chord changes, and rhythmic structures have proven successful over the years. Nobody has done more to help people understand the theoretical underpinnings of popular music than today's guest, Rick Beato. His YouTube videos dig into how songs work and what makes them great. We talk about music theory and how it contributes to our appreciation of all kinds of music.

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Rick Beato obtained a master's degree in jazz studies from the New England Conservatory of Music. He is currently a producer and owner of Black Dog Sound Studios in Georgia, as well as host of a popular YouTube channel. He has worked as a session musician, songwriter, and lecturer at Berklee College of Music and elsewhere. He is the author of The Beato Book Interactive as well as other music-training tools.

9 thoughts on “208 | Rick Beato on the Theory of Popular Music”

  1. Krzysztof Pierański

    Sean Caroll + Rick Beato !!! At first, I thought it was a glitch.
    It’s absolutely fantastic when two poles of my world meet. I can’t wait to listen to this episode!

  2. Amazing podcast , at times it made me think of the conversation with Dawkins ( i think ) about how the male songbird can affect a females ovulation ( hope i haven’t imagined this ) . Plus i have just discovered Rick , so a somewhat serendipitous episode .

  3. I loved this episode! Sean, I’ve been listening to/watching you speak, even before you started this podcast. I’ve watched you on TV and elsewhere on the internet. You normally sound so assertive and confident, I don’t even think about it; but at the beginning of this episode, you seemed almost apologetic. I’m not used to expecting that from you. I would hope you’d feel comfortable having as a guest on your show whoever you thought had something interesting to say. I’ve always found that to be true about the topics you choose to discuss and the guests you choose to have those discussions with.

    I love that you had a musician Youtuber on as a guess. I’m a long-time fan of yours and I’ve never reached out, but now I’m compelled to tell you I am very interested in the way you might take things if you had more guests like Rick on. I’ve watched his YouTube channel. I’ve enjoyed it. I am much more a fan of yours, and you hosting him excites my imagination about how expansive Mindscape could get. AND I’m now watching his YouTube videos. If you wanted to talk to another internet song analyst sometime, my first suggestion would be to check out Kirk Hamilton and his podcast, Strong Songs. Anyway, I loved listening to both of you get right down to the damn modes, and give Pythagoras a shoutout. Much love, Sean!

  4. All Mindscape episodes are fun and worthwhile, but this was a very neat surprise. I follow Beato on Youtube and have seen all the vids he mentions. This was a very good perspective on him, and a great conversation.

    Other excellent music theory Youtubers are Adam Neely and Daniel Bennett, but they’re young men, and Beato is a seasoned veteran with broad perspective

  5. One of my favorite podcasts featured one of my favorite YouTubers! Rick is one of the most concise commentators on music and the industry in general, and to spread his knowledge further outside his normal sphere ant into your listeners is absolutely great for everyone.

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  7. If you are looking to have an empirically-grounded discussion about big picture questions related to music (e.g., Why is there music? Why does music sound the way that it does? How does music give us the feels?), I can think of dozens of more qualified people. Just a few names: Ani Patel, Elizabeth Margulis, David Huron, Sandra Trehub, Peter Pfordresher …

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  9. I’m a massive fan of Sean and Rick, and this episode will be one I will relisten to > once.
    But an important question was asked to which Rick was slightly at a loss to answer. The question was why an octave, why 12 notes, why major, why minor.
    Here’s my explanation: an octave is twice the root frequency. Our perception of “1 octave up” is essentially our hearing+brain figuring out that we’ve gone up to the next overtone, or if you like, our sense of hearing ‘knows’ when things have scaled by 2, ½, 4, ¼, etc. Not surprising really since there’s essentially electromechanical sensors being made to vibrate in our ears to pick up the noises. So A is 440Hz, so is 880Hz & 220Hz. This means any scale that subdivides the ‘octave’ must be a geometric scale. In our 12-note system the common ratio is 2^(1/12) per semitone ascending, around 1.059463094… (which as a fraction can be approximated as 89/84, or 18/17).
    If you start playing a guitar and want to knock out some classic riffs you quickly learn ‘power chords’ on 3 strings, typically using low E and A strings for root. You form the root with your index (or open) + middle finger up 2 frets up on the next string for a perfect 5th + same position next string up making an octave up (7+5=12). The perfect 5th is 7 semitones up from its root and is present in both minor and major scales, it’s the 3rd note in your arpeggio and chord triad.
    In terms of frequency 7 semitones from the root is 2^(7/12) = 1.498 ≈ 1½ = 3/2 and your ear just ‘knows’ it’s right. So it seems our auditory system can do primitive integer ratio maths on adjacent and coincident notes. You soon find this out trying power chords off the D and G strings and forgetting to add the extra fret’s-worth of interval on your B (and top-e) – it just sounds terrible, your senses can hear the lack of commensurability in the frequencies (that’s from physics – commensurate frequencies in Lissajou’s figures).
    If we do some more math we find that to a good approximation the 2nd in our standard scales is 8/7 of the root frequency, the minor-3rd 6/5, the Major-3rd 5/4, the perfect-4th 4/3. The minor-7th is 1/9 of the root frequency under the next octave up. This means when we combine a root, 3rd and 5th in a triad we get ratios of frequencies 10:12:15 for a minor, 4:5:6 for a major triad – our sense of hearing can do rational arithmetic!
    In the case of the 12-note scale the diminished-5th frequency is √2 x root, so maybe we can extract roots too without knowing it.
    So why 12? You could divide the octave into equal interval scales of n notes by making your ratio 2^(1/n). But are you going to end up with nice integer ratios of frequencies? You only get close to the “perfect 5th” 1.5 x root in cases n=7, 12, 17, 19, 29, 31, …. (at the 5th, 7th, 10th, 11th, 17th, 18th chromatic notes respectively). Of these n=7 has only 1 neat rational root multiplier (4/3) on its scale at its 4th chromatic position and no others. If we look for similar patterns in n=17, 19, 29, 31 we find nothing has the richness of our n=12, though worthy mention should go to the 15th chromatic note of the n=19 equal-interval scale which computes to 5/3.
    So n=12 gives us a rich combination of small-integer rational frequency ratios, with a manageable number of semitones – I mean could you handle 62 frets to the octave?
    But what about Major and minor I hear you cry – I’m going to do some analysis on 7ths and pentatonics first, then finish this.

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