When changing chords on a guitar, do we play according to the main chord's scale for the entire song, or the current chord?

1. When the chord changes do I play a different scale?
2. How do you change chords according to scales?
3. Which modes go with which chords?

When the chord changes do I play a different scale?

All you need to do is switch scales with the chord changes. For example, if the progression was Dm7 – G7 – Cmaj7, you could play D minor pentatonic, G major pentatonic, C major pentatonic. You just need to shift the scale and play any note in the scale. ... That is why we use other scales and the modes.

How do you change chords according to scales?

Here are 8 concepts every guitarist needs to know to change keys with ease:

1. Identify the key you're in. ...
2. Learn the music alphabet. ...
3. Find the chords in the scale. ...
4. Understand the chord families of each key. ...
5. Know when to go up or down. ...
6. You can transpose as many time as you need. ...
7. Switching the key, means switch the chord!

Which modes go with which chords?

Major chords follow the formula 1-3-5-7. Both Ionian and Lydian modes contain these notes; therefore either mode can be used.
...
Seventh Chords and Modes.