A way of learning the A scale is by knowing ahead how the scale is played for every chord pattern. Because in major scales we’re only having 3 chord patterns in the Cuatro it becomes logic to learn the scale patter for each of these chord patterns.
We will use the G patterns, D pattern and B pattern.
A scale
| 2 | 10 | 10 |
| 1 2 3 | 7 7 8 10 | 10 12 14 15|
| 2 2 4 | 7 6 7 9 | 11 11 12 14 |
| 4 2 4 5 | 7 7 9 | 12 12 14 |
Once you learn the scale for each chord pattern you can play in other keys by just replicating the same patter for each chord.
