The seventh-level chords in each key are different. The seventh-level chord refers to a triad composed of the seventh-level tone as the main tone in a certain key. For example, in the natural major key of C, the seventh-level chord The chord is Bm-5 (B diminished triad) composed of three tones BDF.

"Guitar chord" refers to the "chord" played on the "guitar", and also refers to the harmony composed of several different tones. A chord is a combination of three or more tones that are stacked (that is, played simultaneously) according to a certain interval relationship.

Chord function

1 C, the 1st degree chord, is used to clarify the tonality. Most major-key songs begin and end with it. However, you can use as few main chords as possible in the middle of the song, otherwise it will always give people a sense of termination and the progression of the music will be very hard.

2 Dm, the 2nd degree chord, is a very soft chord. Its most important use is to be placed before the dominant chord, the 5th degree chord. The 5th degree chord naturally returns to the 1st degree chord, so it is easy to form a 2-5-1 progression. This is an extremely common progression.

3 Em, the 3rd degree chord, is also a very soft chord. As the music progresses, it will immediately become soft and slightly sad. The 1-3-4 progression, C-Em-F in the key of C major, is a very common progression. Sometimes in a piece of music where a 1st degree chord is used, you can consider replacing it with a 3rd degree chord, and the music will immediately become less tough. This technique is very commonly used in Hong Kong and Taiwan music.

4 F, the 4th degree chord, is another regular triad in the major key and is one of the backbone chords. It is very bright, making people feel open-minded and feeling like they are "flying" all of a sudden. The American country music we hear and the songs describing the western prairies and the Grand Canyon are all expressed using 4th degree chords. There is absolutely a difference between a 1st degree chord followed by a 4th degree chord and a 3rd degree chord.

5 G, the 5th degree chord, the third positive triad in the major key, is indispensable for any song. It supports the main chord. The sense of ending of the music is generated by the progression of 5-1. Of course, there are many songs in modern pop music, especially European and American music, that do not use 5-1 termination. This is the characteristic of pop music, but the 5th degree chord is still unshakable as the skeleton chord of music.

6 Am, that is, the 6th degree chord, a neutral chord, if it is used as the main chord, it will be a minor key. The songs are definitely going to be melancholic and sad. If a 6th degree chord appears in some parts of a major key, it serves to connect different chords. The 6th degree chord is like a bridge. Almost all chords can be connected in front of it, and the same is true behind it.

7 Bdim, the 7th degree chord, is rarely used in pop music. Because it is a diminished triad, it has a sense of inward contraction and is generally only used in certain progressions or for the flow of the root note.