About this video
This video introduces meters with 6, 9 and 12 beats: 6/4, 6/8, 9/8 and 12/8. It explains that at a slow tempo each eighth note can be felt as a beat, but at a fast tempo the eighths group in threes so the beat becomes a dotted quarter note, giving 2, 3 or 4 beats per bar.
You'll be able to
- explain what 6/4 and 6/8 mean.
- explain how tempo changes how we count 6/8, 9/8 and 12/8.
- say how many dotted-quarter beats there are in fast 6/8, 9/8 and 12/8.
Key words
- tempo
- The speed of the music.
- pulse
- The beat you feel in the music; it can change with tempo.
- dotted quarter note
- A quarter note plus half its value, equal to three eighth notes.
- 6/8
- Six eighth-note beats per measure, felt as two dotted-quarter beats when fast.
Transcript
- [Instructor] Here is an example of 6/4 time from American composer Joseph Schwantner's The Poet's Hour. Six beats in a measure with the quarter note getting one beat. ("The Poet's Hour") The next meter that we will discuss is 6/8. Six beats in a measure with the eighth note getting one beat.
This one is a little more complicated because at a slow tempo or a slow speed we can think of each measure with six beats in a bar. But if a tempo is fast, we divide the bar into two beats with each beat worth three eighth notes or a dotted quarter. For a slow version of 6/8, let's listen to this beautiful passage for the oboes and English horn from Ravel's ballet, Daphnis et Chloe.
(gentle music) For a fast version, let's listen to part of the Firebird's Variation from Stravinsky's ballet, The Firebird. (bright music) 9/8 continues with the same pattern. In a slow speed or tempo, each eighth note receives one beat, with nine beats in a bar.
In a faster tempo, the pulse is three, with a dotted quarter note receiving one pulse or one beat. 12/8 continues in the same pattern. In a slow tempo, 12 beats in a measure with an eighth note receiving one beat. If we look at the opening of Stravinsky's Firebird, we see 12/8 at the slow temp with a feeling of 12 beats in a measure.
(deep somber music) If we look at the same introduction a few bars later, the pulse moves to four beats with a dotted quarter note getting one beat. (light airy music)
Video © Khan Academy, used under CC BY-NC-SA. Watch on Khan Academy. Puzzicle is not affiliated with Khan Academy.