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I don't really get music theory, but I like the chords called flat fives, so this video is me doing my best to explain them. (Watch at a distance in a well-lit room)

First off, what feels good when listening to music? C (stable) → F (tense) → G (tense) → C (stable)... The existence of tension makes the transfer to stability feel pleasant!!

To liken it to a story, it's interesting to have incidents and then see how they land at a conclusion. Sorta...

C (Intro: Last night,) → F (Event: When I bit into a hamburger,) → G (Event: Meat juices came flooding out,) → C (End: And it was delicious)

"I don't wanna tell commonplace stories you can predict like that!!" Have you never had such a worry? That's why originality in making interesting incidents (how you add tension) and reaching interesting conclusions (how you stabilize) leads to uniqueness in your music!!

C (Intro: Last night,) → F (Event: When I bit into a hamburger,) → Bb9 (Unexpected Event: Oil came gushing out,) → AbM9 (Unexpected End: And I moved to Dubai)

Once again, let's talk about best buds (perfect fifths). Do and so: The interval between these notes is guaranteed to be stable. Shifting things upward (sharp) to purposefully add instability is an aug. (Do mi so# = Caug) Shifting things downward (flat) to purposefully add instability is a flat five (b5). (Do mi so♭ = C(b5))

To name a song that makes good use of this strange, fantasy-like sound... ♪ Saria's Song (The Legend of Zelda: Ocarina of Time) (The one that instantly came to mind. There's also the start of Holst's "Jupiter," say...?)

(barrage of flat-fives) As usual, even just doing the "voom, voom" parallel movement is a simple method that produces tricky sounds. (Destructive...) I realized they even show up in blues-y songs like this!!!! (Gb(b5)/Ab) (The key changed...)

Now, here enters a relative of Mr. b5! (I guess relative is the word...)

Do mi so♭... If you take the third note mi down a half-tone, it's a diminished. (Do mi♭ so♭ = Cdim) It seems some prefer to use a dim that includes the seventh note (la)... (Do mi♭ so♭ la = Cdim7 ≈ Cdim) (Why is la the seventh note? Go ask your mom or dad...) SUSPENSE!!

By the way, like augs, the notes in dims are at equal intervals (distance 3). They're called something like... cyclic chords? (♪ When you use a Boo in Mario Kart 64) This unsettling sound can be very handy for producing original tension.

C (Intro: Last night,) → F (Event: When I bit into a hamburger,) → G (Event: Meat juices came flooding out,) → C (End: And it was delicious) If we take that story from the start, and instead of G, we make just the right hand a dim chord...

C (Intro: Last night,) → F (Event: When I bit into a hamburger,) → Fdim/G (Sorta Surprising Event: It was cheese! Guess that works?!) → C (End: And it was delicious) It got kind of a tragic, dramatic sound!

Finally, with knowledge of dims, let's progress some chords based on this story... (Ebdim: Casually-addable incident) (Dm7b5/G: Try this one next time) (C#dim: An incident appears!!) (Gm7/Bb (?): So emotional I became emo...) (???: What's goin' on with the chords here??? Ab6/Bb (?) Feels like a 6 for a second) (Bbdim/A: You again, huh?)

If my concept of augs' instability is floatiness, I guess my concept of dims' instability is uneasiness? (Dbsus4: The briefest sus4) Tara-ta-ta-talalala... ♫ (CM9: Sorry if I got any chords wrong as usual...)