Final answer:
The blues form indeed consists of 12 bars with an AAB lyrical pattern, which is a foundational structure in blues music and influential in other genres.
Step-by-step explanation:
The statement regarding the blues form being a 12-bar structure with an AAB form is true. The 12-bar blues is one of the most prominent chord progressions in popular music, especially in the blues genre. The 'AAB' pattern describes the structure of the lyrics within the 12 bars, where the first line (A) is typically repeated once (another A), followed by a second, conclusive line (B), all set over a distinctive chord sequence. For example, the first four bars are the 'A' section with the initial line of lyrics.
The repetition of this line happens in the next four bars. The concluding line (B) is heard in the final four bars. This form has been a foundational element of blues music and has also influenced many other genres, such as rock and jazz.