So I've been trying to understand the role that pentatonic scales serve in my playing. For some reason, Ive had a serious mental block in understanding exactly how to use them. Any explanations given to me are always brief and, I dont want to say 'dismissive', but the general feeling I get toward the situation is that its very easy to understand and that I am over thinking it. Now, I think I understand how the forms fit together. I know all five, I see how they follow one another. I felt like I had had an epiphany in this understanding. However, a new question just occurred to me. Considering that the pentatonic scales omit the 4th and 7th scale degrees, what happens when you use those chords in a song? For instance, I-IV-V is a very common chord progression. If it were in "C", it would be C-F-G. But theres no "F" in the pentatonic forms played over "C". Although less common than the IV, what if while playing in "C Major", the chord progressions took me to the diminished 7th? Again, theres no "7th" in the forms, no "B's". I must be missing something, to not have the root notes of two chords.... Maybe I'm not understanding the proper way to use pentatonics, maybe I have some sort of mistake in my calculations, I dont know. Any help in this matter would be greatly appreciated.