These diagrams accompany this video on the Pentatonic Scale:
Video: https://youtube.com/live/CVPHEpgXHKo
The minor pentatonic scale is used all the time in music.
It sounds awesome ... and there's a reason for that. (It's basically a blues scale without the b5 interval.)
To get a feel for how to play it on both piano and guitar, check out these diagrams in all 12 keys: