#1
I've never really looked over the major modes of scales the two and a half years I've been playing bass. But mainly focused on Blues and major, and minor/minor harmonic scales. But I've decided to learn all the modes and what not. So I stumbled upon the Pentatonic modes today, which I already knew how to play it, or so I thought, when Bam! I found out there was 4 versions of 1 mode.
So here's the question... When I'm jamming, and they want me to play the pentatonic mode, which one should I play? Or is it just whichever one sounds best kinda deals I loathe so much.
#2
I dont think you'd be in a situation where a guitarist says "hey play me a pentatonic scale will you". it would more likely be that the gutarist is playing a chord and YOU think to yourself that you will play a pentatonic lick over it. So the first mode is basically a minor scale, so of course your guitarist will be playing a minor chord. You'd then have to work out or know which scale goes with the chord, much like the normal modes..

I'm not quite sure what you mean...can you explan a little bit? do you basically want to know what modes go with what chords?
#4
I'm sure you've seen the lesson already. JohnlJones has really helped with the chords question.. he seems a bit of a theory guru. sweet. lets rape him of his knowledge!
#5
Pentatonic scales are a whole book unto themselves. From what I remember, they are really abundant in non-western music, and if I remember right there are two types, hemitonic or anhemitonic, which have something to do with semitones or lack thereof.

Yes, I think we need to get the theory guru out to post a bit more I learned all of this a dog age ago and I think I've forgotten more than I've retained.