twelve-bar
twelve-bar — noun
1. A chord-and-rhythm pattern common in blues, rock, and jazz music, where a sectio
A chord-and-rhythm pattern common in blues, rock, and jazz music, where a section of a song uses twelve bars (measures) split into three groups of four, following a I–IV–V chord sequence — the chords built on the first, fourth, and fifth notes of a musical key.
Rodrigo taught his sister a twelve-bar blues on the piano, showing the I-to-IV change.
twelve-bar + blues: the most common noun phrase
Marco listened to Muddy Waters and counted the twelve-bar form in each verse.
In music class, Léa learned to recognise the twelve-bar form from old blues recordings.
Hamza's band wrote a twelve-bar rock song that got the crowd clapping.
Adina played a twelve-bar progression on bass, calling out each I–IV–V–I change.
- twelve-bar blues
the full name; slightly more specific because it names the genre
- blues progression
broader term — not all blues progressions follow the twelve-bar pattern
- I–IV–V progression
technical term focusing on the chord sequence rather than the bar count
文法句型
the twelve-bar
twelve-bar + noun (twelve-bar blues)
用法筆記
Often shortened to 'twelve-bar' in casual conversation among musicians. The full expression 'twelve-bar blues' is more common in general writing. Frequently appears as a compound modifier before a noun (e.g., 'twelve-bar structure', 'twelve-bar progression').