Once you have a basic understanding of how intervals work, it is a good idea to practice playing scales in interval sequences. As mentioned earlier, a sequence is a repetitive pattern in which the rhythm remains the same, while the pitches are repeated higher or lower, usually within a specific scale or mode. The following examples demonstrate intervals played through various major scales. Because of the pattern of tones and semitones within the major scale, you will find that various types of intervals occur. Example 19.0 shows the C major scale played ascending and descending in 2nds. All of the intervals are 2nds, but some are major 2nds (e.g. C to D and D to E) and some are minor 2nds (e.g. E to F and B to C).
Here is the F major scale played in 3rds. Once again, some are major and some are minor.
This example shows the A major scale played in 4ths. All of the intervals here are perfect 4ths except for D to GS which is an augmented 4th.
Here is the Bb major scale played in 5ths. All of the intervals are perfect 5ths except for A to Et which is a diminished 5th.
This one demonstrates the G major scale played in 6ths. Again, some are major and some are minor. As the intervals get larger, these examples will become more difficult to play- Take them slowly at first but stick with it# as a good knowledge of intervals is essential for improvising.
This example shows the Ab major scale played in 7ths. As with previous interval studies, you will find that some of the 7ths here are major and some are minor.
It is also important to be able to play your scales in octaves. Using octaves is a common Jazz guitar technique made popular by Wes Montgomery. Playing in octaves requires quite a bit of movement along the fretboard. This example demonstrates the E major scale played in octaves.
As well as learning your scales with all the intervals, it is important to practice improvising and concentrating on a particular interval. The following example makes extensive use of 4ths.