I have recently realised that there are now more and more home-grown wannabe composers out there than I thought. I personally put this down to the easy availability of sequencing software, such as cubase. It makes me think of days past when great games were written in bedrooms.
Basic theory
We could spend years covering basic music theory. Yes, it is a necessary evil and to be recommended. Unfortunately, it is as boring as hell and the UKian exam boards don't make it any easier. Many a time I have sat down in an exam and have had to answer what were essentially the same questions several times over. Yawn.
There are some basics that I am not going to cover. If you don't know what a scale or a chord is, or don't understand what I mean when I say "The key of C" then I'm afraid this guide is not for you.
For the curious, a simple guide to music theory can be found here.
Chord Progressions
Music, like computing, can be easily abstracted. As such, we don't need a base key. We can work around chord numbers instead.
For the key of C, we have the following chord numbers that match up with that number of the scale:
C - D - E - F - G - A - B
I II III IV V VI VII
Likewise, for the key of G, the chord numbers would match up thus:
G - A - B - C - D - E - F#
I II III IV V VI VII
E.g.
Chord I, when in the key of C, would consist of the notes C - E - G
Chord V, when in the Key of G, would consist of the notes D - F# - A
The "#" represents "sharp", so F# is the note "F sharp", on a keyboard it's the black note located between the notes F and G.
Now, as far as basic composition is concerned, there are only three chords we need to play around with: I - IV - V
In the key of C, these chords would be:
I : C - E - G
IV: F - A - C
V : G - B - D
A simple eight-bar composition could be done with the following chord sequence:
I - IV - I - V
I - IV - V - I
Try playing it on your instrument. Just playing a single note should sound vaguely melodic:
C - F - C - G
C - F - G - C
Now, why does this work? Why does it sound melodic?
The simple answer would be "because it does". This, obviously, is not good enough.
Each chord has its own properties. Its own "sound", if you will. Chord I is referred to as the "root" chord, as it is from here that your melody will have its "root", where everything else will come from and eventually return to.
Chord V is also important. You'll notice after playing I - V that the air around you will almost shout out its disagreement, there's an aniticipations somewhere out there, but for what? The melody has to be ended. Quite simply, chord V is used as a bit of a cliff-hanger. The reason that the first line ends with it is because it will let us lead on to the next line. Likewise, because of its jarring properties, it is a good penultimate chord to use to lead to ending the tune on I. Chord V is also known as the "dominant".
Chord IV is a good "filler" chord. It is know as the "Sub-dominant". Composition (and this is equally true with regards to improvisation) is all about getting from one note to the other, and how to do it in the style you like. Going straight from chord I to V and back again would make a rather boring melody. However, bring in chord IV and you instantly have many more options.
Chord IV also sounds "right" as it is always in the major. For example, if we are in the key of C, chord IV will be F - A - C, which is also the same chord as chord I from the key of F. Notice the relation? Now look at chord V. Notice anything about it along the same kind of lines? I'll have more of this to say in a later episode, but I'll give you a teaser: Ever wondered how you change keys in a piece without it sounding horrible?
Putting it all together
OK then, so you want to compose a basic little tune using the above chord sequence. This is how I would do so for the keyboard / piano.
(Things also get slightly interesting here as we have two hands to play with. The left hand plays the low notes on the keyboard, the right hand the high notes. The melody will, for the time being, always be on the right hand as it is much more prominent this way)
I start off in the easiest of all keys, C. That means that our chord sequence will consist of:
C - F - C - G
C - F - G - C
I will also be using 4-4 time - that is, four crotchets to the bar.
I would normally play block chords on the left hand (e.g. C-E-G, F-A-C, all three note chords slammed down.) but this sounds rather clumsy, So instead, I will play the following notes, two per beat of the bar:
C - G - E - G - C - G - E - G, F - C - A - C - F - C - A - C, C - G - E - G - C - G - E - G, G - D - B - D - G - D - B - D etc.
Now, using the notes from the scale of each chord, we can come up with a simple melody.
The scales we will be using are:
I/C : C,D,E,F,G,A,B
IV/F: F,G,A,B,C,D,E
V/G : G,A,B,C,D,E,F
When we are on chord I, we can use the notes from that scale. Likewise, when we are on chord V, we should use the notes from that scale. Specifically, we should aim to use the first, fourth and fifth notes from these scales a lot, and use the rest of the notes to get to and from them.
There is a problem here, though. Not every note from the scale will sound "nice". Think of the key of "F". There is a B-flat (Bb) in there that wouldn't sound right whilst we're in the key of C. Likewise, if we play a B-natural whilst on the chord of F, things will sound even worse. The solution? Ignore that note and don't use it. At least for the time being.
So, that in hand, we can come up with a basic melody. The rhythm used with these notes isn't important for the time being. Play freely.
C - D - E - F - G, F - G - A - B - C, G - F - E - D - C, D - E - F - G (yes, that F will sound a bit nasty, but we can let it go)
Try and come up with your own second part based on what is being done with the first - namely, how do I get to note X whilst I'm on this note, Y?
Next time...
In part II, I'll cover more chord progressions and introduce having fun with chord inversions!