Watch the The I-V-vi-V-IV-V Desc. Bass online guitar lesson by TrueFire from Play Acoustic Guitar 4: Rhythm Approaches
The I-V-vi-V-IV-V Desc. Bass - Progression #20 is a video guitar lesson presented by Ravi and is sourced from Guitar Lab: 30 Rock & Pop Progressions.
We'll extend the previous descending bass line progression by repeating the I-V movement before going to the IV, and on that repeat, instead of playing the I again we'll use its relative minor, the vi. We'll once again use versions of each chord without necessarily putting the root in the bass in order to create the stepwise descending bass line. In order to make the second V chord work in a descending bass line, in the key of G playing a D with an F# in the bass by hooking your thumb over, in the key of D play A with your first finger and add a C# with your third finger, and in the key of C play a G with a B as your bass note played with your first finger. For the second V chord, I might hint the chord instead of playing it by staying on the previous chord, the vi, but put the root of the V chord in the bass. For example, in the key of C, I might play an Am with my fourth finger on a G on the sixth string.
Examples: "Piano Man", "Smiling Face", "Tears in Heaven", "Dust in the Wind"