For example, which power chords can be used over C minor pentatonic scale?
closed as off-topic by Jacob Swanson, Neil Meyer, Tim, Shevliaskovic, MrTheBard Jul 24 '15 at 11:16
This question appears to be off-topic. The users who voted to close gave this specific reason:
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The minor pentatonic scale is just the minor scale without two notes (the 2nd scale degree and the 6th). Any harmony that you can create with the notes of the minor scale also work for the pentatonic scale.
So all 6 natural power chords in C minor (C5, Eb5, F5, G5, Ab5, and Bb5) you can use with the minor pentatonic scale as there is at least one note in the scale to harmonize with them even if it is not the root as in the case of the Ab5. It's not even a stretch to include D5 even though it doesn't naturally exist in this scale as it can easily be borrowed.
Another thing to note in general a lot of players like to weave in and out of parallel major and minor pentatonic scales when soloing and may even play a major pentatonic scale over what is a more minor harmony and a minor pentatonic scale over what is a more major harmony. You can find this all the time in solos by Jimmy Page and Angus Young. It's worth trying out once you get the basics down.
Power chords (As in
Root-fifth-octave) don't have a minor or major quality (they lack a third). Buuuut, you could imply a major or minor tonality by following the scale degrees.
The Cm pentatonic scale is
C Eb F G Bb. If you want to stick to pentatonic, you could use any of the above. For example, C5-F5-G5 would do a I-IV-V progression, which is super common in many styles of music. Playing an
Eb5 would imply something minor, as
C-Eb is a minor third interval