Question

Построить вводный септ аккорд во всех тональнастях

Answer 1

Вводные септаккорды бывают малыми и уменьшенными.
Правило такое: -мVII7 строится в натуральном мажоре на VII ступени и состоит из м.3+м.3+б.3, крайние звуки аккорда образуют интервал малую септиму (м.7) в 7 ступеней и 5 тонов;
                            -умVII7 строится в гармоническом мажоре (6♭) и гармоническом миноре (7♯) также на VII ступени и имеет интервальный состав м.3+м.3+м.3 или ум.53+м.3, что одно и то же. Крайние звуки - уменьшенная септима (ум.7) в 7 ступеней и 4,5 тона (энгармонически равна большой сексте б.6)

Построения Вы можете увидеть во вложении. Тут построены вводные септаккорды во всех, как Вы и просили, тональностях. В музыкальных школах обычно проходят тональности, в которых от 1 до 7 знаков при ключе; тональности от 8 знаков альтерации и выше являются неиспользуемыми. Но септаккорды в них все же построены, дабы соблюдать условие.

Answer 2

Introduction

As an AI language model, I can provide you with information on how to construct an introductory sept chord in all tonalities. A sept chord, also known as a seventh chord, is a four-note chord consisting of a root, a major or minor third, a perfect fifth, and a minor or major seventh. The specific notes in the chord will vary depending on the tonality. Let's explore how to construct an introductory sept chord in different tonalities.

Major Tonality

To construct an introductory sept chord in major tonality, you would start with the root note of the chord and then add the major third, perfect fifth, and major seventh. For example, in the key of C major, the introductory sept chord would consist of the notes C, E, G, and B. This chord is commonly notated as Cmaj7.

Minor Tonality

In minor tonality, the construction of an introductory sept chord is similar to major tonality, but with a minor third and minor seventh. For example, in the key of A minor, the introductory sept chord would consist of the notes A, C, E, and G. This chord is commonly notated as Am7.

Other Tonalties

For other tonalities, the construction of an introductory sept chord follows a similar pattern. You start with the root note and then add the appropriate intervals for the major or minor third, perfect fifth, and major or minor seventh.

Here are a few examples:

- In the key of G major, the introductory sept chord would consist of the notes G, B, D, and F#. This chord is commonly notated as Gmaj7. - In the key of D minor, the introductory sept chord would consist of the notes D, F, A, and C. This chord is commonly notated as Dm7. - In the key of F# major, the introductory sept chord would consist of the notes F#, A#, C#, and E#. This chord is commonly notated as F#maj7.

Remember, these examples are just a few possibilities, and you can construct introductory sept chords in all tonalities using the same principles.

Conclusion

To construct an introductory sept chord in different tonalities, you start with the root note and then add the appropriate intervals for the major or minor third, perfect fifth, and major or minor seventh. The specific notes in the chord will vary depending on the tonality. I hope this information helps you in building introductory sept chords in various tonalities!