progression

In Gary Smith's 53rd submission for BluesHarmonica.com we continue our series on blues bridges.

In Gary Smith's latest submission we start a series on understanding the blues bridge.

In Hob's latest lesson he plays the entire tongue block study song Temperature (focus on slaps) for me and I critique. I teach hob the bending technique of the dip and how to breathe through his nose as a pressure relief valve while playing the harmonica (as well as learning how to close the nose on inhale notes so that he doesn't fill up with air). He learns what the note layout is on the major diatonic harmonica and why the notes were ordered in the way they are. Finally we talk about the difference between 1st and 2nd Positions and we play common accompaniment lines in the 12 Bar Blues. continue reading...

Okay, let's see if you figured it out correctly. Below are the three different chord progressions found in the song, as well as the chorus with the error.

Harp Solo (12)
I I I I
IV IV I I
V7 IV I V7

Verses (8)
I I7 IV IV
I V7 I V7

Bridge (8)
IV I IV I
IV I V V

Chart
Harp Solo (12) | Verse (8) x2 | Harp Solo (12) | Bridge (8) | Verse (7.5) | Verse (8) ||

See if you can figure out where the two beats were dropped in the verse following the bridge and how you could approach the vocals to change this to be a standard 8 bars.

This song is on the School of the Blues House Band Standards List simply because of its form. There is no standard 8 bar blues chord progression, unlike the 12 bar blues which is expected to be a specific way (with small variations every now and again). In my experience "Key to the Highway" provides the most common version of an 8 bar blues used. If you use this as your reference point, when doing a different 8 bar blues you can say to yourself, "It's like Key to the Highway, but it changes like this..."

The chord progression is...

I V IV IV
I V I V continue reading...

Here's the 12 Bar Blues Form... one bar for each chord symbol (roman numerals):

I I I I
IV IV I I
V IV I V

The only place where four bars of the same chord happens is in the first four bars (first line). So, if you don't hear any movement to another chord from the band for more than two bars, you know you're somewhere in the first part of the form.

In the second line, the IV Chord lasts for two bars and then the I Chord for two bars. If you hear two bars and then a chord change, then you're somewhere between bars 5 and 9. continue reading...

Now that you know the chord progression it's a good idea to practice your arpeggios to the progression. Listed below are the three chords, an example of where you can most easily play those notes on the harmonica, and their actual pitches. I've listed up to the flat-7th, though keep in mind that the flat-7th is not always appropriate (refer to past posts on when and why the flat-7th can sound good or bad). It's of course a good idea to try these notes across the entire ranage of the harmonica, but these will get you started.

Chord Name / TAB / Actual Pitches
I7 = 2 3 4 5 (G B D F) continue reading...

What you find in "Key to the Highway" are our standard I, IV and V Chords, but in a different order. Here's the chord progressions:

I V IV IV

I V I V

The first line of four bars has the I Chord (one chord) for one bar, then a bar of the V Chord and then two bars of the IV Chord.

The second line has the I Chord for one bar, then the V Chord for one bar and the last two bars are our standard turnaround (the same as found in the last two bars of our 12 Bar Blues Progression).

Now try playing the root notes with your C Harmonica in 2nd Position, Key of G..

2 1 1+ 1+

2 1 2 1 continue reading...

You probably already know that 12 Bar Blues is the most common form in blues. What's the second most common?... 8 Bar Blues. Listen to Little Walter's version of "Key to the Highway." Knowing that 2 Draw is the root note of the I Chord (one chord), 1+ is the root note of the IV Chord and 1 Draw is root note of the V Chord, see if you can figure out the chord progression. You'll need your C Harmonica for this (the song is in the key of G).

Hint, the first four bars is a standard V-IV-I-Turnaround, then it goes into an 8 Bar Progression.

Though the 12 Bat Blues Progression is the most common chord progression we play over, other chord progressions do exist. Some have very simple changes that can be "felt" and little to no study is needed. Some progressions introduce new chords and have unintuitive form lengths and require many hours of work in the practice room before ideas begin to flow.

Something always to keep in mind is that the chord progression for the vocals doesn't have to be the chord progression for the solos. In fact, it's a pretty common thing to do, historically speaking. continue reading...