*Almost positive I'm on point here. Let me know if anyone sees anything off in this article. An Introduction to Intervals
Theres two ways of thinking about intervals. Both mean the same thing, get the same results. Its better to think of intervals in ways of distance between notes. But for now you can think in them in terms of distance between frets. Which ever is easier for you for now. Just remember, regardless of where its started (the root note) intervals are always the same.
Whole tone, semi tone
Also called Whole Step, and Half Step. A half step is one fret......always. Guess what a whole step is.........2 frets. Always! Doesn't get easier then that eh? All the scales and modes are made up different combinations of half steps and whole steps. C Major (or any Major scale) goes Whole tone - Whole tone - Half tone - Whole tone - Whole tone - Whole tone - Half tone.
Basically all that means is this :
Start on your third fret on your A string (the C note...yes we're back to C Major!)
Go from your third fret, to your fifth fret ( C to D) This is a whole step (or whole tone)
Now go from your 5th fret to your 7th fret (D to E) This is a whole step
Now your 7th to 8th fret (E to F) This is a half step ( or semi-tone)
From 8th to 10th (F to G). This is a whole step.
From 10th to 12th (G to A) This is a whole step.
12th to 14th (A to B). Whole step
from 14th to 15th (B to C) this is a half step.
*Keep in mind, this is also another way of playing C Major. Look at your fretboard printout. Its the same notes, played on one string rather than on three. These are the same notes, in the same octave. Theres a slight difference in sound. Because its played higher up on the fretboard, it sounds a bit more "Closed" due to the tension.
Play on the same frets you just played on your A string for C major, but on your E string. Start on your third fret (G) and play the SAME frets as if you were on your A. Thats G major (G, A, B, C, D, E, F#, G). Use the same fret distance on your A string, but on the 5th fret. ( IE 5th fret on the A string (which is a D note), then 7th, 9th, 10th, 12th, 14th, 16th, 17th. (D, E, F#, G, A, B, C#, D). This also goes into the cycle / circle of fifths. The cycle starts at C, then moves onto G, then D. Each time you go around the cycle of fifths you play the major scale for that note. So C Major starts off, no sharps. Then comes G Major (the same frets, played one string lower) and it has one sharp. Then D (same fret spacing still, just played on the 5th fret on the A string, or on your open D string) and it has 2 sharps. It keeps going like that ( adding one more sharp as you go "around" the circle of fifths) but we'll get into that later.
Intervals (One Octave Intervals)
Look at your musical alphabet. It goes A, A#, B, C, C#, D, D#, E, F, F#, G, G# (Keep in mind, theres no B sharp, E sharp, or C flat, or F flat. If you chose to read music, you'll see there are B sharps and F flats and such, but it just means to play C if its B sharp, or E if its F flat, yada yada yada.
Heres are the intervals, memorize them as soon as you can, and it'll make wonders in your music communication. If I can say "Play a perfect 4th" and you know where it is immediatly, it'll make teaching you incredibly easy. So do your best! Theres more to intervals, but this is the general way they are composed, and we'll go more into it when you get them down solid.
Lets start with A
If we start with A, then thats called your Root note. (Written as simply R when talking intervals)
A# (when A is the root note) is called the minor 2nd. (Written as m2, notice the lower case m)
B would be the Major 2nd. (M2, note the upper case)
at this point. Play your open A. Then the first fret on your A string ( A#). Thats your m2 (minor 2nd). Now play the 2nd fret on your A string (B). Thats your Major 2nd (M2)
C Would be your minor 3rd (m3)
C# would be your Major 3rd (M3)
D would be your Perfect 4th (P4)
Now, play the R (Root note, its A for this example). Play the third fret(C). Thats the m3 (minor 3rd) of A. Now the the 4th fret (C#), this is M3 (Major 3rd). Finally your P4 is the 5th fret on your A string (D).
D# is called one of TWO things. It would be EITHER an AUGMENTED (higher) 4th, or a DIMINISHED (lower) 5th. Augmented simply means a half step up ( one fret higher), as Dimished simply means a half step lower (one fret down). So the 6th fret on your A string (D#) is an Augmented 4th, or Diminished 5th ( A4, or D5 respectively) with A as the Root note.
E is the Perfect 5th of A (P5) 7th fret - A string
F is the minor 6th (m6) 8th fret - A string
F# is the Major 6th (M6) 9th fret - A string
G is the minor 7th (m7) 10th fret - A string
G# is the Major 7th (M7) 11th fret - A string
When you go back to A ( on the 12th fret) this is called the OCTAVE. The 12th fret on any string is the same note as the open string. (12th fret on your E string, is E, 12th fret on your D string, is D ect ect)
So all the intervals are as follows - R - m2, M2, m3, M3, P4, A4/D5, P5, m6, M6, m7, M7, O (I've seen the octave referred to as Root too, dont like to see it that way though, as its the next octave up. Also as a Perfect 8th. Perfect 8th (P8) is the best way to look at it I think. Because next I'll show you compound intervals, it goes into 9th's and 10th's so P8 makes it easier for me to understand. You can call it Polly Piss Pants for now for all it matters lol. Just remember it ends on the same note you started on, just an octave higher)
Spelled out intervals are called - Root, minor 2nd, Major 2nd, Minor 3rd, Major 3rd, Perfect 4th, Augmented 4th / Diminished 5th, Perfect 5th, minor 6th, Major 6th, minor 7th, Major 7th, Octave
C Major constructed with intervals
The major scales intervals are as follows. Root, Major 3rd, Major 4th, Perfect 4th, Perfect 5th, Major 6th, Major 7th, Octave. (See why its called the major scale?)
Play your C major. The C is your root. D is the Major 2nd. E is the Perfect 3rd. F is the Perfect 4th, G is the Perfect 5th (Notice how G is also the next step in your cycle of 5ths? All the cycle of 5ths so is go from C, then to C's perfect 5th [G], then to G's perfect 5th [D]), A is the Major 6th. B is the Major 7th. Back to C (the octave).
So CDEFGABC is the C Major scale. The Relative Minor scale for C is A. The A minor scale has the SAME notes as the C Major scale. Theres no sharps and no accidentals (accidentals is another word for FLATS, but sounds more important i guess lol). So if it has the same notes, but stats on A, what would it be? Try to figure it out on your own before reading on.
A minor scale, notes and intervals
So we determined that A minor has the same notes as C Major. But A is the root note. So the notes go ABCDEFGA.
The interval structure for A minor is R + M2 + m3 + P4 + P5 + m6 + m7 + P8 (or O)
On your fretbaord it goes :
Open A string.
2nd fret on A (B note, Major 2nd)
3rd Fret on A (C note, minor 3rd)
Open D string (Perfect 4th)
2nd fret on D (E note, Perfect 5th)
3rd fret on D (F note, minor 6th)
Open G (minor 7th)
2nd Fret on G (A note, octave, P8, or Polly Piss Pants)
Thats your Natural Minor scale. Remember its relative to C major, because it has the same notes, just with A as the root note. So the intervals are different, but the notes are the SAME. This is the tip of the iceberg going into Modes of C Major. It makes wonders in not only constructing bass lines and songs, but solo'ing as well. It gives you the ability to play the same tonal notes as the song your playing, but make it happier or sadder sounding (or brighter darker, whichever).
Play your C major, slowly. Then play your A minor. Your ear might not be keen on it yet, but try to notice how C Major sounds really happy, and A minor sounds sad.
You can learn another scale right....MEOW! =) Take the m7 and make it M7. So instead of playing your open G, play the 1st fret on your G string (G#). This is the harmonic A minor. Its a little more "pretty".
*This was an email, and aimed at a friend I am teaching bass to. Feel free to tell me if I'm off here
-Troy