I've always thought playing major pentatonic scale fifth above a Maj7 chord sounds beautiful, calming and meditative, so I improvised little bit with this idea a while ago when I was thinking about pentatonic scales.As to pentatonic scales; they occur in almost every styles of music. There are literally 231 pentatonic scales. When I compose I utilize anywhere from one to perhaps five different pentatonic scales within the music.
I still had the recording so I'll attach it here (recorded with my phone but the idea hopefully conveys). After reading this discussion I thought if you (or anyone else) might want to try out the idea, if it's any beneficial (i.e using pentatonic scale in a meditative, relaxing manner, preferably improvising).
So in here I took major chord (started with Fmaj) and improvised using pentatonic scale always starting fifth above (for example C pentatonic over Fmaj chord), which gives intervals: 5, 6, 7, 9, 3 (with minor chords need to use a minor pentatonic fifth above, same principle, and there's other ways to use them than this).
The chords used here were something like this (I always moved the scale with the chord):
Fmaj7, Cmaj7, Ebmaj7, Bbmaj7,
Fmaj7 Cmaj7, Gmaj7, Dmaj7,
Fmaj7, Cmaj7, Abmaj7, Gm7,
Gbmaj7 Fsus4, F
But it can be anything and more simpler (like few chords repeating), this is just what I happened to record. It's also a neat way to bring chord extensions with pentatonic scale, I think!
