The 12-bar blues or blues changes is one of the most prominent chord progressions in popular music. The blues progression has a distinctive form in lyrics, phrase, chord structure, and duration. In its basic form, it is predominantly based on the I-IV-V chords of a key.

The blues can be played in any key. Mastery of the blues and rhythm changes are "critical elements for building a jazz repertoire".

Structure

In the key of C, one basic blues progression (E from above) is as follows. (For the most commonly used patterns see "Variations" section below.)

Chords may be also represented with a few different notation systems. A basic example of the progression would look like this, using T to more pop songs which thus often have a blues sound even without using the classical 12-bar form.)

Using said notations, the chord progression outlined above can be represented as follows.

The first line takes four bars, as do the remaining two lines, for a total of twelve bars. However, the vocal or lead phrases, though they often come in threes, do not coincide with the above three lines or sections. This overlap between the grouping of the accompaniment and the vocal is part of what creates interest in the twelve bar blues.

12 Bar Blues is the debut solo album from Stone Temple Pilots singer Scott Weiland. Its sound and style differ greatly from STP's previous releases. The design concept of the cover is a homage to the cover design of John Coltrane's Blue Train album. The title name comes from the simple chord progression known as "twelve-bar blues."

Development

In a 1998 interview on MTV's 120 Minutes, Weiland states that his then brother-in-law introduced him to Blair Lamb, who co-produced 12 Bar Blues with Weiland.

Reception

Released in 1998 on Atlantic Records, the album was not a commercial success, but achieved some critical acclaim. Stephen Thomas Erlewine of Allmusic gave the album 4 out of 5 stars, declaring "12 Bar Blues is an unpredictable, carnivalesque record confirming that Weiland was the visionary behind STP's sound. He's fascinated by sound, piling on layers of shredded guitars, drum loops, and keyboards, making sure that each song sounds drastically different from its predecessor." David Fricke of Rolling Stone awarded the album 3.5 out of 5 stars and declared that "12 Bar Blues isn't really a rock album, or even a pop album. Weiland, out on his own, has simply made an honest album – honest in its confusion, ambition and indulgence. It was worth the risk." but also remarked that "Maybe it's a little early for Scott Weiland to be going the solo way."Pitchfork Media stated upon its release that "12 Bar Blues is easily the most innovative album Weiland has ever produced for public consumption," while Entertainment Weekly wrote that "the LP's sheer invention and hooks will make your indulgence worthwhile."