 Okay, so in our last video we talked about the relationship between the I chord, the IV chord and the V chord. And we looked at that in terms of the I chord is always where we're going to anchor our index finger and then we're going to go one string up to get to the IV chord to anchor for the root and then two frets up from that to get to the V. And really those are based on the major scale. If we think of a major scale, one is the key, two, three, four is the fourth note of the scale and then five is the fifth note of the scale, one, two, three, four, five. But I just want to show you one other thing. We can also think backwards down the major scale and look at this. It's really wonderful to know. Here's a B flat on the D string. So let's say we started up there for our root. The V chord is one string below that. So from one going down a string, we get to the V chord. And if we go down two frets from there, we get to the IV chord. So another pattern I might use is this, one. Now I'll go to IV, back to one, to five, to one, five, back to one. So I'm sort of thinking in the opposite direction. One is here, five is here, and four is here. Before we were going from this B flat, one is here, four is here, and five is here. So it's good to know that you can incorporate that upper octave. Let me just show you a little bit of that, and I'll sort of use both octaves on the I chord. And you'll start to get a feel for what I call fretboard geography through that. It's really knowing where to go to get from a I to a IV. Where to go to get from a IV to a V or from a IV to a I. Just kind of knowing where you have to go on that fretboard. Let me just show you a little bit. We're going to start up here. Here we go. One. Chromatic. Four. One. Five. Five. Four. Five. One. Five. On that a little bit, and once you get really comfortable going down from the root to the lower V and the lower IV, then you can start mixing it up a little bit and going from the lower root up and from the higher root down, and you'll really begin having a good feel for that relationship between the I, the IV, and the V chord as you're playing the bass in a jazz combo setting.