Minor pentatonic
The MINOR PENTATONIC is the natural minor scale minus its 2nd and ♭6th: what remains is 1, ♭3, 4, 5, ♭7.
This is THE rock, blues and solo scale — if you have ever heard a guitar solo, you have heard it.
A minor pentatonic is all white keys: A–C–D–E–G. And just like scales, pentatonics have relatives: A minor pentatonic contains the very same keys as C major pentatonic.
1 · ♭3 · 4 · 5 · ♭7
1
♭3
4
5
♭7
A minor pentatonic: A–C–D–E–G.
Practise this in the trainer — it opens with this lesson the first time the concept comes up.