左手ポジションと運指の3原則による12メジャーキーのポジションマップを紹介します。1ポジション3フレットの原則を使うと運指のパターンが単純化され3つのパターンに集約されます。スケール音で構成されるすべてのフレーズはこの3パターンの組み合わせで弾くことができます。
![ベーサー君](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/man.png?w=1256&ssl=1)
ベーサー君
シンプルで覚えやすいね。
Cメジャー
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![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Fメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-03.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Bbメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-05.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Ebメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-07.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Abメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-09.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Dbメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-11-2-1024x822.jpg?resize=1024%2C822&ssl=1)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Gbメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-13.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Bメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-15.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Eメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-17.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Aメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-19.jpg?resize=1024%2C822)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Dメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-21-1024x822.jpg?resize=1024%2C822&ssl=1)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん
Gメジャー
![](https://i0.wp.com/electric-bass-lesson.com/wp-content/uploads/2021/12/jpeg-ionian-all-map-23-1-1024x822.jpg?resize=1024%2C822&ssl=1)
![ベスさん](https://i0.wp.com/electric-bass-lesson.com/wp-content/themes/cocoon-master/images/b-woman.png?w=1256&ssl=1)
ベスさん