Blues Turnaround Help

These things confuse the hell out of me. Whenever I'm learning a blues tune these always make the least sense theory wise to me.

I understand we're trying to resolve to the I chord and good way of doing this is by getting to the V or ii chord. For example in an old delta blues tune I recently learned by Pink Anderson called Everyday of the week (G major blues), the turnaround starts on G-E7-A7-D7-G. Essentially a vi-ii-V-I. Here's the link to the lesson: http://fingerstyleblues.com/lesson-20-pink...the-week-blues/

What I don't get are the descending melodic elements to the turnaround especially after the last G (the B-D-A#-C#-A-C-G-B-G line). I'm really trying to understand why these work even though a couple of the notes aren't in the scale). To me it looks like the A# is from the C7 chord and the C# is from the A7 chord.

I may have just answered my own question and I know how a lot of times in blues tunes they just use 7 chords. Why is that? Just breaking the rules to get a good color?

I guess I need some guidance in how to understand blues music.

Thx,
Tristan

New Guy

Hey GMCers,

My names Tristan and I just found this awesome website. I started playing guitar young but lost touch with it when I learned how to smoke a bongload. Needless to say I don't smoke many bongloads anymore and I'm trying to become a better player. I currently work at a recording studio as an engineer and want to improve my playing so I can become a better producer as well. I'd classify myself as an intermediate player with an intermediate knowledge of theory as well.

I've been playing a lot of fingerstyle delta blues recently due to the fact I can never find my pick. I finally found my pick and have been trying to improve my picking technique and I'm really looking to improve my ear and improvisational skillset. If anyone has any tips on good lessons I'd be very intersted. So far I've only done the Soul/RnB and Blue Soloing: Beginners lesson.

Cheers,
T