イ 長七コード
記号: Amaj7
ダイアグラム
五線譜
Staff Notation
ピアノ鍵盤
ギター (1)
ギター (2)
音程
| 音名 | 音程 | 半音数 |
|---|---|---|
| イ | P1 | 0 |
| 嘆ハ | M3 | 4 |
| ホ | P5 | 7 |
| 嘆ト | M7 | 11 |
About the イ 長七 Chord
The イ 長七 chord is built from the notes イ, 嘆ハ, ホ, 嘆ト. These notes are derived by stacking intervals above the root note イ, following the interval pattern that defines every 長七 chord. Understanding how a chord is constructed from intervals is one of the most valuable skills in music theory, because it allows you to build the chord in any key and recognize it in any context.
You can use this chord in a variety of musical contexts. Try exploring the scales that contain these notes to discover which keys this chord naturally belongs to. Each scale listed above shares all the notes of this chord, making it a diatonic chord within that key. Understanding these relationships helps with songwriting, improvisation, and arranging.