Name: 20分鐘搞懂爵士樂理論！ (Jazz Theory Explained in 20 Minutes)
Uploaded: 2026-03-07T17:30:56.000Z
Duration: 19 min 48 s

So in today's video, I'm going to attempt the unthinkable.

所以今天的影片，我要來挑戰一件不可能的事。

I'm going to try to explain jazz theory in one video.

我要試著在一支影片裡把 jazz theory 講清楚。

So I've broken this lesson into three sections.

所以我把這堂課抽成三個部分。

First of all, chords, then chord progressions, and last of all, scales.

首先是 chords，然後是 chord progressions，最後是 scales。

So these are three of the main topics in jazz theory.

這三個都是 jazz theory 的主要內容。

These are the main topics which cause a lot of confusion.

So by the end of this lesson, you're going to walk away with a deeper confidence in your understanding of jazz.

所以上完這堂課，你對 jazz 的理解會更有信心。

Now, we've got a lot to cover, so we're going to get straight in.

接下來我們要講的東西很多，所以我們直接開始吧。

So, first of all, let's talk about jazz chords.

所以，首先，我們要來聊聊 jazz chords。

Now, chords in jazz go a lot higher than in other styles of music.

在 jazz 裡，和絃的組成比其他音樂風格高很多。

So in most styles of music, you'll only encounter three note chords.

所以大多數的音樂風格，你只會遇到三個音的和絃。

So you'll play the root, the third and the fifth, and

所以你會彈根音、三度音和五度音，

you can get different types of chord within just these three notes.

而且光是這三個音，你就能得到不同類型的和絃。

So you can get a major chord, a minor chord, an augmented chord and a diminished chord.

所以你可以得到大三和絃、小三和絃、增三和絃和減三和絃。

However, in jazz, we build this stack of thirds higher.

不過，在 jazz 裡，我們會把這個三度疊加蓋得更高。

So instead of just stopping at the fifth, we'll go up and add another third above the fifth, which gives us the seventh.

所以我們不會只停在五度音，我們會往上加另一個三度音，得到七度音。

And all of these numbers are numbered from the root of the chord.

而這些數字都是從和絃的根音開始算的。

So if this is a C chord, then this is one.

所以如果這是 C 和絃，那這就是一。

我們稱這個為根音，所以是 1、3、5、7。

And that's why all chord extensions are generally odd numbers, because they're built in thirds, which means we're skipping every other note.

這也是為什麼所有的和絃延伸通常都是奇數，因為它們是以三度疊加建立的，這表示我們跳過了其他音。

Then we can go up to the 9th, we can even go up to the 11th, and

然後我們可以往上加到九度音，甚至可以加到十一

And 13 is pretty much the biggest number you'll see in a chord, because if you go up a third from 13, then you come back to the root.

而 13 差不多是你會在和絃裡看到的最大的數字，因為如果你從 13 往上加一個三度音，你就會回到根音。

It's always seventh chords, ninth chords, 11th chords, and 13th chords.

總是七和絃、九和絃、十一和絃，以及十三和絃。

So now let's get specific and look at the actual types of seventh chord.

所以現在我們來具體看看不同類型的七和絃。

There's different types of seventh chord.

They have a root, third, fifth and seventh.

它們有根音、三度音、五度音和七度音。

But we can create different types of seventh chord by making different combinations of the major third and the minor third.

但我們可以透過組合大三度音和小三度音來創造不同類型的七和絃。

So we're going to go through the three main seventh chords to begin with.

所以我們就先來看看三種主要的七和絃。

First of all, we have a major seven chord.

So if you just imagine the notes of C major scale, and

所以你只要想像 C 大音階的音符，

you just play the root, third, fifth and seventh, then you get a major seven chord.

然後彈奏根音、三度音、五度音和七度音，你就會得到一個大七和絃。

Next let's look at the minor seven chord.

And if you just imagine a minor scale, C minor scale, and

you just play the root, third, fifth and seventh of that scale, well, you end up playing a minor 7 chord.

然後彈奏它的根音、三度音、五度音和七度音，你就會得到一個小七和絃。

And next we have the dominant 7 chord here is C dominant 7.

接著我們來看屬七和絃，這是 C 屬七和絃。

So it's basically a major triad, but with a minor seventh.

所以它基本上是一個大三和絃，但加上一個小七度音。

So those are the three most common types of seventh chord in jazz.

這就是爵士樂中最常見的三種七和絃。

I would say about 90% of jazz music is built of just these three seventh chords.

我認為大約 90% 的爵士樂都是由這三種七和絃組成的。

Again, the major seven chord, the minor seven chord, and the dominant seven chord.

再次強調，大七和絃、小七和絃，以及屬七和絃。

And they're all just different combinations of major thirds and minor thirds.

它們都是由大三度音和小三度音的不同組合構成的。

Now, above any type of seventh chord, you can add what's known as chord extensions.

現在，在任何七和絃之上，你都可以加上所謂的和絃延伸。

And These are the 9th, the 11th, and 13th, which we mentioned just a moment ago.

而這就是我們剛剛提到的九度音、十一、十三度音。

So for the chord below, the root, third, fifth and seventh are known as chordal tones, chord tones.

所以對於下面的和絃，根音、三度音、五度音和七度音，就叫做和絃音。

The root, third, fifth and seventh, whatever type of chord it is, minor seven, dominant seven, etc.

根音、三度音、五度音和七度音，不管是什麼類型的和絃，小七和絃、屬七和絃等等。

But above these, you can add a chord extension like the 9th, the 11th, or the 13th, or all three.

但在這些之上，你可以加上和絃延伸，像是九度音、十一、十三度音，或是全部三個。

You get all sorts of big chords like this.

你就會得到各種這樣的大和絃。

So how do you find the 9th, the 11th and the 13th?

那要怎麼找到九度音、十一、十三度音呢？

Well, regardless of what type of chord it is, whether It's a major 7 chord, minor 7 chord, or a dominant 7 chord, the chord extensions are always built from the major scale.

嗯，不管是什麼類型的和絃，不管是大七和絃、小七和絃，還是屬七和絃，和絃延伸總是建立在我們想像的音階上。

So you imagine a major scale from the root of the chord.

所以你想像一個從和絃根音開始的大音階。

不管是什麼和絃類型都沒關係。

We're just going to imagine a major scale starting from the root, and

我們就想像一個從根音開始的大音階，

you're going to find the chord extensions based on that major scale.

然後你會根據這個大音階來找出和絃延伸。

So the 9th is really the same note as the two of the scales, the 1, 2, the 11th is the same as the 4 4th.

所以九度音其實就是音階的二度音，一、二，十一、度音就是四度音。

所以三、四，這就是我們的十一、度音。

And the 13th is the same as the 6th, which is 5, 6.

而十三度音就是六度音，也就是五、六。

So even if it's a minor 7 chord, let's take a C minor 7 chord here.

所以即使是小七和絃，我們就以 C 小七和絃為例。

If it tells you to add a 9th, 11th or 13th, you would still imagine C major scale.

如果它要你加上九度、十一、度音或十三度音，你還是會想像 C 大音階。

To find those notes, it's going to be the same 9th, the same 11th, and

要找到這些音，它會跟大七和絃或屬七和絃一樣的九度音、一樣的十一、度音，

the same 13th as if it was a major 7 chord or a dominant 7 chord.

This is the natural 9th, the natural 11th, and the natural 13th.

這就是自然九度音、自然十一、度音，以及自然十三度音。

And they're all built from the major scale.

而且它們都是從大音階建立起來的。

Now, the extended harmony notes can also be altered, which means they can be sharpened or flattened.

現在，延伸的和絃音也可以被改變，也就是說它們可以被升高或降低。

所以你不會總是隻看到 9、11、13。

Sometimes you'll see flat 9, sharp 9 you'll see sharp 11 and sometimes you'll see flat 13.

有時候你會看到降九、升九，你會看到升十一，有時候你會看到降十三。

So how do you find an altered chord extension?

那我們要怎麼找到一個改變的和絃延伸呢？

Well, let's say the chord symbol says C dominant 7, flat 9.

嗯，假設和絃符號寫著 C 屬七降九。

Well, we're going to start by finding the natural extension first and we just imagine the major scale.

嗯，我們會先找到自然的延伸音，然後我們就想像大音階。

So C major scale is going to be D natural, and

所以 C 大音階會是 D 自然音，然後

then you flatten it and that's your chord extension, that's the flat nine.

你再把它降低，那就是你的和絃延伸，那就是降九度音。

Or if it said sharp nine again, you find the natural nine first and then sharpen it.

或者如果它寫著升九，你一樣先找到自然的九度音，然後再把它升高。

Or if it said C7 sharp 11, we find the natural 11 first.

或者如果寫著 C7 升十一，我們會先找到自然的十一。

So run up the major scale to the fourth, which is the 11th, and then sharpen it.

所以沿著大音階跑到四級，也就是十一，然後再把它升高。

And the same if it was the 13th, C dominant 7, flat 13.

同樣的，如果是十三，C 屬七降十三。

Let's say find the natural 13 first by running up the major scale and then flatten it.

假設先找到自然的十三，沿著大音階，然後再把它降低。

That's where you get these nice chords with altered extensions.

這就是你得到這些帶有變化延伸音的漂亮和絃的地方。

Things like the flat 9, sharp 9, sharp 11 and flat 13.

像是降九、升九、升十一和降十三。

Now, before we move on to the next topic, I've actually notated a chord symbol reference guide for you.

好，在我們進入下一個主題之前，我其實已經為你準備好了一個和絃符號參考指南。

You can download that for free at the link below and you'll get my one page sheet where I've just notated all of the common types of 7th chord, 9th, CH, 11th chord and 13th chord.

你可以在下面的連結免費下載，你會得到我的一頁講義，上面我已經標註了所有常見的七和絃、九和絃、十一和絃和十三和絃的類型。

那麼，關於和絃的 Voicing，我們快速講一下。

So there's many different ways that you can play any chord in jazz.

所以，在爵士樂裡，任何一個和絃都有很多種不同的彈奏方式。

So if we just take a look at the seventh chords, the C major seventh chord, which we've looked at.

所以，如果我們來看一下七和絃，像是我們之前看過的 C major seventh 和絃。

So if you imagine a group of singers were singing this, well, each note is a voice, a separate voice.

所以，如果你想像有一群歌手在唱這首歌，嗯，每個音都是一個聲音，一個獨立的聲音。

And we can redistribute these voices and turn them upside down and add a few notes in and do all sorts of things to create different voicings.

我們可以重新分配這些聲音，把它們顛倒過來，加入一些音，做各種事情來創造不同的彈奏方式。

So just to demonstrate, we can play this, which is a literal voicing, you're playing literally what the chord symbol says, then there's more sophisticated voicings like fourth voicings.

所以，為了示範，我們可以彈奏這個，這是一個字面上的 Voicing，你彈奏的完全是和絃符號上寫的，然後還有更複雜的 Voicing，像是 fourth voicings。

It's just a stack of fourths using notes from C major scale.

這只是使用 C major scale 的音所組成的 fourth 疊加。

We also have fifth voicings where we're using mostly fifths.

我們也有 fifth voicings，我們主要使用 fifths。

And this is still considered a voicing for C major 7.

這仍然被認為是 C major 7 的 Voicing。

字幕列表影片播放

20分鐘搞懂爵士樂理論！ (Jazz Theory Explained in 20 Minutes)

sort

intense

essential

sophisticated